{"id":531728,"date":"2026-03-19T11:00:32","date_gmt":"2026-03-19T04:00:32","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=531728"},"modified":"2026-03-19T11:00:32","modified_gmt":"2026-03-19T04:00:32","slug":"huong-dan-toan-dien-cach-doi-don-vi-do-luong-chinh-xac-va-nhanh-chong","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/huong-dan-toan-dien-cach-doi-don-vi-do-luong-chinh-xac-va-nhanh-chong\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n: C\u00e1ch \u0110\u1ed5i \u0110\u01a1n V\u1ecb \u0110o L\u01b0\u1eddng Ch\u00ednh X\u00e1c v\u00e0 Nhanh Ch\u00f3ng"},"content":{"rendered":"<p style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb<\/b><span style=\"font-weight: 400;\"> l\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i gi\u00e1 tr\u1ecb t\u1eeb m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng n\u00e0y sang \u0111\u01a1n v\u1ecb kh\u00e1c trong c\u00f9ng m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng. Vi\u1ec7c \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u00fang gi\u00fap \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n, so s\u00e1nh v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c v\u00e0 an to\u00e0n.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><b>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c \u0111\u1ed5i \u0111\u01a1n v\u1ecb<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 c\u00f4ng c\u1ee5 chu\u1ea9n h\u00f3a gi\u00fap \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd nh\u01b0 \u0111\u1ed9 d\u00e0i, kh\u1ed1i l\u01b0\u1ee3ng, di\u1ec7n t\u00edch, th\u1ec3 t\u00edch, th\u1eddi gian\u2026 \u0110\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u00fang chu\u1ea9n l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00ednh x\u00e1c trong h\u1ecdc t\u1eadp, s\u1ea3n xu\u1ea5t, nghi\u00ean c\u1ee9u v\u00e0 \u0111\u1eddi s\u1ed1ng h\u1eb1ng ng\u00e0y.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec?<\/b><span style=\"font-weight: 400;\"> \u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 gi\u00e1 tr\u1ecb chu\u1ea9n d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc, kh\u1ed1i l\u01b0\u1ee3ng, th\u1ec3 t\u00edch, th\u1eddi gian, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd kh\u00e1c. M\u1ed7i qu\u1ed1c gia, ng\u00e0nh ngh\u1ec1 hay l\u0129nh v\u1ef1c kh\u00e1c nhau c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 \u0111\u01a1n v\u1ecb ri\u00eang bi\u1ec7t.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>T\u1ea1i sao c\u1ea7n bi\u1ebft c\u00e1ch \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb?<\/b><span style=\"font-weight: 400;\"> Th\u1ef1c t\u1ebf, kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng s\u1eed d\u1ee5ng chung m\u1ed9t h\u1ec7 \u0111o l\u01b0\u1eddng. V\u00ed d\u1ee5: Vi\u1ec7t Nam d\u00f9ng h\u1ec7 m\u00e9t, Anh-M\u1ef9 l\u1ea1i d\u00f9ng inch, feet, pound. Khi h\u1ecdc t\u1eadp, du l\u1ecbch, ho\u1eb7c l\u00e0m vi\u1ec7c trong m\u00f4i tr\u01b0\u1eddng \u0111a qu\u1ed1c gia, b\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i bi\u1ebft <\/span><span style=\"font-weight: 400;\">\u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng<\/span><span style=\"font-weight: 400;\"> \u0111\u1ec3 giao ti\u1ebfp, t\u00ednh to\u00e1n ch\u00ednh x\u00e1c, tr\u00e1nh nh\u1ea7m l\u1eabn.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u00e1c lo\u1ea1i \u0111\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ed9 d\u00e0i (m\u00e9t, inch\u2026), kh\u1ed1i l\u01b0\u1ee3ng (kg, pound\u2026), di\u1ec7n t\u00edch (m\u00b2, ha\u2026), th\u1ec3 t\u00edch (l\u00edt, m\u00b3\u2026), th\u1eddi gian (gi\u00e2y, ph\u00fat\u2026), nhi\u1ec7t \u0111\u1ed9 (\u00b0C, \u00b0F\u2026), v\u1eadn t\u1ed1c, \u00e1p su\u1ea5t v\u00e0 nhi\u1ec1u \u0111\u1ea1i l\u01b0\u1ee3ng chuy\u00ean ng\u00e0nh kh\u00e1c.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>T\u1ea7m quan tr\u1ecdng c\u1ee7a \u0111\u1ed5i \u0111\u01a1n v\u1ecb ch\u00ednh x\u00e1c:<\/b><span style=\"font-weight: 400;\"> Trong k\u1ef9 thu\u1eadt, ch\u1ec9 m\u1ed9t sai s\u1ed1 nh\u1ecf do \u0111\u1ed5i \u0111\u01a1n v\u1ecb sai c\u0169ng c\u00f3 th\u1ec3 g\u00e2y th\u1ea5t tho\u00e1t l\u1edbn ho\u1eb7c nguy hi\u1ec3m. Trong h\u1ecdc t\u1eadp, \u0111\u1ed5i sai \u0111\u01a1n v\u1ecb d\u1eabn \u0111\u1ebfn b\u00e0i to\u00e1n sai to\u00e0n b\u1ed9. \u0110\u1eb7c bi\u1ec7t, c\u00e1c ng\u00e0nh y t\u1ebf, x\u00e2y d\u1ef1ng, h\u00e0ng kh\u00f4ng\u2026 \u0111\u1ec1u y\u00eau c\u1ea7u \u0111\u1ed5i \u0111\u01a1n v\u1ecb c\u1ef1c k\u1ef3 nghi\u00eam ng\u1eb7t.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-531868 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-1.jpg\" alt=\"cach-doi-don-vi-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i: H\u01b0\u1edbng d\u1eabn chi ti\u1ebft<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0i ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o <\/span><b>b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i<\/b><span style=\"font-weight: 400;\"> chu\u1ea9n qu\u1ed1c t\u1ebf ho\u1eb7c b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i h\u1ec7 Anh-M\u1ef9 sang m\u00e9t. Nh\u1edb nguy\u00ean t\u1eafc m\u1ed7i b\u1eadc c\u00e1ch nhau 10 l\u1ea7n, thu\u1eadn ti\u1ec7n cho t\u00ednh to\u00e1n nh\u1ea9m nhanh v\u00e0 ch\u00ednh x\u00e1c.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><b>B\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i qu\u1ed1c t\u1ebf v\u00e0 m\u1ed1i quan h\u1ec7<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>H\u1ec7 m\u00e9t qu\u1ed1c t\u1ebf<\/b><span style=\"font-weight: 400;\"> l\u00e0 h\u1ec7 \u0111o l\u01b0\u1eddng ph\u1ed5 bi\u1ebfn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam v\u00e0 h\u1ea7u h\u1ebft c\u00e1c qu\u1ed1c gia. C\u00e1c \u0111\u01a1n v\u1ecb c\u01a1 b\u1ea3n l\u00e0: kil\u00f4m\u00e9t (km), hect\u00f4m\u00e9t (hm), decam\u00e9t (dam), m\u00e9t (m), decim\u00e9t (dm), centim\u00e9t (cm), milim\u00e9t (mm).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi m\u00e9t)<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi \u0111\u01a1n v\u1ecb li\u1ec1n k\u1ec1)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Kil\u00f4m\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">km<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 hm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hect\u00f4m\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">hm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 dam<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decam\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 m<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 dm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decim\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.1 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 cm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Centim\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">cm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.01 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Milim\u00e9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">mm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.001 m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211;<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><i><span style=\"font-weight: 400;\">V\u00ed d\u1ee5:<\/span><\/i><span style=\"font-weight: 400;\"> 1 m\u00e9t = 10 dm = 100 cm = 1000 mm; 1 km = 1000 m<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Nguy\u00ean t\u1eafc \u0111\u1ed5i \u0111\u01a1n v\u1ecb:<\/b><span style=\"font-weight: 400;\"> Khi \u0111\u1ed5i sang \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n, nh\u00e2n v\u1edbi 10 (ho\u1eb7c 100, 1000\u2026). \u0110\u1ed5i sang \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n, chia cho 10, 100, 1000\u2026 t\u00f9y s\u1ed1 b\u1eadc. V\u00ed d\u1ee5: 5 m = 50 dm; 1200 cm = 12 m.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u1ee8ng d\u1ee5ng:<\/b><span style=\"font-weight: 400;\"> H\u1ecdc sinh c\u00e1c l\u1edbp 2, 3, 4, 5 c\u1ea7n n\u1eafm v\u1eefng <\/span><b>b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i l\u1edbp 3<\/b><span style=\"font-weight: 400;\">, <\/span><b>b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i l\u1edbp 4<\/b><span style=\"font-weight: 400;\">\u2026 \u0111\u1ec3 gi\u1ea3i to\u00e1n v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-531869 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-2.jpg\" alt=\"cach-doi-don-vi-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i ph\u1ed5 bi\u1ebfn kh\u00e1c (h\u1ec7 anh-m\u1ef9, thi\u00ean v\u0103n)<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ngo\u00e0i h\u1ec7 m\u00e9t, b\u1ea1n s\u1ebd g\u1eb7p c\u00e1c \u0111\u01a1n v\u1ecb nh\u01b0: inch (in), foot (ft), yard (yd), mile (mi), h\u1ea3i l\u00fd (nmi) trong s\u00e1ch qu\u1ed1c t\u1ebf, k\u1ef9 thu\u1eadt ho\u1eb7c du l\u1ecbch.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i sang h\u1ec7 m\u00e9t:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i sang m\u00e9t (x\u1ea5p x\u1ec9)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Inch<\/span><\/td>\n<td><span style=\"font-weight: 400;\">in<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.0254 m<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Foot<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ft<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.3048 m<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Yard<\/span><\/td>\n<td><span style=\"font-weight: 400;\">yd<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.9144 m<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Mile<\/span><\/td>\n<td><span style=\"font-weight: 400;\">mi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1,609.34 m<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">H\u1ea3i l\u00fd<\/span><\/td>\n<td><span style=\"font-weight: 400;\">nmi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1,852 m<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>M\u1eb9o nh\u1edb nhanh:<\/b><span style=\"font-weight: 400;\"> 1 ft = 12 in; 1 yd = 3 ft; 1 mi = 1,609 m; 1 nmi = 1,852 m.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf:<\/b><span style=\"font-weight: 400;\"> Du l\u1ecbch qu\u1ed1c t\u1ebf, h\u1ecdc k\u1ef9 thu\u1eadt, x\u00e2y d\u1ef1ng\u2026 th\u01b0\u1eddng xuy\u00ean ph\u1ea3i <\/span><b>\u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i<\/b><span style=\"font-weight: 400;\"> gi\u1eefa h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 Anh-M\u1ef9.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng: B\u1ea3ng chu\u1ea9n v\u00e0 c\u00e1ch quy \u0111\u1ed5i<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ed5i \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng d\u1ef1a tr\u00ean <\/span><b>b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng<\/b><span style=\"font-weight: 400;\"> ti\u00eau chu\u1ea9n, th\u01b0\u1eddng s\u1eed d\u1ee5ng h\u1ec7 m\u00e9t t\u1eeb t\u1ea5n (t), kil\u00f4gam (kg), gam (g), miligam (mg) v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb ph\u1ed5 th\u00f4ng kh\u00e1c nh\u01b0 pound (lb), ounce (oz).<\/span><\/p>\n<h3 style=\"text-align: justify;\"><b>B\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng chu\u1ea9n qu\u1ed1c t\u1ebf<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn:<\/b><span style=\"font-weight: 400;\"> t\u1ea5n (t), t\u1ea1 (q), y\u1ebfn (y), kil\u00f4gam (kg), hect\u00f4gam (hg), decagam (dag), gam (g), miligam (mg).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i chu\u1ea9n:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi gam)<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi \u0111\u01a1n v\u1ecb li\u1ec1n k\u1ec1)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">T\u1ea5n<\/span><\/td>\n<td><span style=\"font-weight: 400;\">t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1,000,000 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 t\u1ea1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">T\u1ea1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">q<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100,000 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 y\u1ebfn<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Y\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">y<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10,000 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 kg<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Kil\u00f4gam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">kg<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1,000 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 hg<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hect\u00f4gam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">hg<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 dag<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decagam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dag<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 g<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Gam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10 mg<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Miligam<\/span><\/td>\n<td><span style=\"font-weight: 400;\">mg<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.001 g<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211;<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: 1 kg = 1000 g; 1 t\u1ea5n = 10 t\u1ea1 = 1000 kg.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng:<\/b><span style=\"font-weight: 400;\"> T\u01b0\u01a1ng t\u1ef1 b\u1ea3ng \u0111\u1ed9 d\u00e0i, m\u1ed7i b\u1eadc c\u00e1ch nhau 10 l\u1ea7n. \u0110\u1ed5i l\u00ean \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n chia cho 10; \u0111\u1ed5i xu\u1ed1ng \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n nh\u00e2n v\u1edbi 10.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng l\u1edbp 4, l\u1edbp 5<\/b><span style=\"font-weight: 400;\"> l\u00e0 ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m cho h\u1ecdc sinh ti\u1ec3u h\u1ecdc.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-531870 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-3.jpg\" alt=\"cach-doi-don-vi-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>\u0110\u1ed5i \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng qu\u1ed1c t\u1ebf v\u00e0 anh-m\u1ef9<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn ngo\u00e0i h\u1ec7 m\u00e9t:<\/b><span style=\"font-weight: 400;\"> Pound (lb), ounce (oz), stone (st).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i sang kg (x\u1ea5p x\u1ec9)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Pound<\/span><\/td>\n<td><span style=\"font-weight: 400;\">lb<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.4536 kg<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ounce<\/span><\/td>\n<td><span style=\"font-weight: 400;\">oz<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.02835 kg<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Stone<\/span><\/td>\n<td><span style=\"font-weight: 400;\">st<\/span><\/td>\n<td><span style=\"font-weight: 400;\">6.3503 kg<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf:<\/b><span style=\"font-weight: 400;\"> Khi mua b\u00e1n qu\u1ed1c t\u1ebf, \u0111\u1ecdc t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt ho\u1eb7c du l\u1ecbch, b\u1ea1n c\u1ea7n bi\u1ebft c\u00e1ch \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng sang kg ho\u1eb7c g \u0111\u1ec3 t\u00ednh to\u00e1n \u0111\u00fang.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o di\u1ec7n t\u00edch v\u00e0 th\u1ec3 t\u00edch: B\u1ea3ng chu\u1ea9n v\u00e0 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ed5i \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch v\u00e0 th\u1ec3 t\u00edch d\u1ef1a tr\u00ean c\u00e1c b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i chu\u1ea9n. V\u1edbi di\u1ec7n t\u00edch, m\u1ed7i b\u1eadc c\u00e1ch nhau 100 l\u1ea7n; v\u1edbi th\u1ec3 t\u00edch, m\u1ed7i b\u1eadc c\u00e1ch nhau 1000 l\u1ea7n.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><b>B\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o di\u1ec7n t\u00edch chu\u1ea9n<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb di\u1ec7n t\u00edch h\u1ec7 m\u00e9t:<\/b><span style=\"font-weight: 400;\"> kil\u00f4m\u00e9t vu\u00f4ng (km\u00b2), hect\u00f4m\u00e9t vu\u00f4ng (hm\u00b2), decam\u00e9t vu\u00f4ng (dam\u00b2), m\u00e9t vu\u00f4ng (m\u00b2), decim\u00e9t vu\u00f4ng (dm\u00b2), centim\u00e9t vu\u00f4ng (cm\u00b2), milim\u00e9t vu\u00f4ng (mm\u00b2).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi m\u00e9t vu\u00f4ng)<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i sang \u0111\u01a1n v\u1ecb li\u1ec1n k\u1ec1<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Kil\u00f4m\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">km\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1,000,000 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 hm\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hect\u00f4m\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">hm\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">10,000 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 dam\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decam\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dam\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 m\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 dm\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decim\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dm\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.01 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 cm\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Centim\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">cm\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.0001 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100 mm\u00b2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Milim\u00e9t vu\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">mm\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.000001 m\u00b2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211;<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>Nguy\u00ean t\u1eafc:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ed5i sang \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n nh\u00e2n v\u1edbi 100, \u0111\u1ed5i sang \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n chia cho 100.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u1ee8ng d\u1ee5ng:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng <\/span><b>b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o di\u1ec7n t\u00edch l\u1edbp 5<\/b><span style=\"font-weight: 400;\">, l\u1edbp 4 \u0111\u1ec3 gi\u1ea3i to\u00e1n ho\u1eb7c \u0111o \u0111\u1ea1c \u0111\u1ea5t \u0111ai, x\u00e2y d\u1ef1ng.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-531871 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-4.jpg\" alt=\"cach-doi-don-vi-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>B\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o th\u1ec3 t\u00edch v\u00e0 l\u00edt<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb th\u1ec3 t\u00edch h\u1ec7 m\u00e9t:<\/b><span style=\"font-weight: 400;\"> m\u00e9t kh\u1ed1i (m\u00b3), decim\u00e9t kh\u1ed1i (dm\u00b3), centim\u00e9t kh\u1ed1i (cm\u00b3), milim\u00e9t kh\u1ed1i (mm\u00b3).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng chuy\u1ec3n \u0111\u1ed5i:<\/b><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><b>\u0110\u01a1n v\u1ecb<\/b><\/td>\n<td><b>K\u00fd hi\u1ec7u<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i (so v\u1edbi m\u00b3)<\/b><\/td>\n<td><b>Quy \u0111\u1ed5i li\u1ec1n k\u1ec1<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u00e9t kh\u1ed1i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">m\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1 m\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000 dm\u00b3<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Decim\u00e9t kh\u1ed1i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">dm\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.001 m\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000 cm\u00b3<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Centim\u00e9t kh\u1ed1i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">cm\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.000001 m\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1000 mm\u00b3<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Milim\u00e9t kh\u1ed1i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">mm\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.000000001 m\u00b3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211;<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 dm\u00b3 = 1 l\u00edt (L); 1 m\u00b3 = 1000 l\u00edt<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u00e1ch \u0111\u1ed5i:<\/b><span style=\"font-weight: 400;\"> M\u1ed7i b\u1eadc nh\u00e2n\/chia 1000. \u0110\u1ed5i t\u1eeb m\u00e9t kh\u1ed1i sang l\u00edt: nh\u00e2n v\u1edbi 1000. \u0110\u1ed5i t\u1eeb l\u00edt sang m\u00b3: chia cho 1000.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u1ee8ng d\u1ee5ng:<\/b><span style=\"font-weight: 400;\"> \u0110o n\u01b0\u1edbc, th\u1ec3 t\u00edch b\u1ec3 ch\u1ee9a, dung t\u00edch b\u00ecnh, v.v.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb trong v\u1eadt l\u00fd, k\u1ef9 thu\u1eadt, th\u1eddi gian<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ed5i \u0111\u01a1n v\u1ecb trong v\u1eadt l\u00fd, k\u1ef9 thu\u1eadt ho\u1eb7c th\u1eddi gian th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng th\u1ee9c chuy\u00ean bi\u1ec7t ho\u1eb7c b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i cho t\u1eebng \u0111\u1ea1i l\u01b0\u1ee3ng nh\u01b0 v\u1eadn t\u1ed1c, \u00e1p su\u1ea5t, nhi\u1ec7t \u0111\u1ed9, th\u1eddi gian.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><b>\u0110\u1ed5i \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c, \u00e1p su\u1ea5t, nhi\u1ec7t \u0111\u1ed9<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>V\u1eadn t\u1ed1c:<\/b><span style=\"font-weight: 400;\"> \u0110\u01a1n v\u1ecb th\u01b0\u1eddng g\u1eb7p: m\/s, km\/h, mph (mile\/h). C\u00f4ng th\u1ee9c chuy\u1ec3n \u0111\u1ed5i: 1 m\/s = 3.6 km\/h; 1 mph \u2248 1.609 km\/h.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u00c1p su\u1ea5t:<\/b><span style=\"font-weight: 400;\"> atm, bar, Pa (Pascal). 1 atm = 101,325 Pa = 1.013 bar.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Nhi\u1ec7t \u0111\u1ed9:<\/b><span style=\"font-weight: 400;\"> \u00b0C, \u00b0F, K. C\u00f4ng th\u1ee9c: \u00b0F = \u00b0C \u00d7 1.8 + 32; K = \u00b0C + 273.15.<\/span><\/li>\n<\/ul>\n<h3 style=\"text-align: justify;\"><b>\u0110\u1ed5i \u0111\u01a1n v\u1ecb \u0111o th\u1eddi gian<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u01a1n v\u1ecb th\u1eddi gian ph\u1ed5 bi\u1ebfn:<\/b><span style=\"font-weight: 400;\"> gi\u00e2y (s), ph\u00fat (min), gi\u1edd (h), ng\u00e0y, tu\u1ea7n, th\u00e1ng, n\u0103m.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ea3ng quy \u0111\u1ed5i:<\/b>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 ph\u00fat = 60 gi\u00e2y<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 gi\u1edd = 60 ph\u00fat = 3.600 gi\u00e2y<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 ng\u00e0y = 24 gi\u1edd<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 tu\u1ea7n = 7 ng\u00e0y<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">1 n\u0103m \u2248 365 ng\u00e0y<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\"><b>M\u1eb9o \u0111\u1ed5i \u0111\u01a1n v\u1ecb th\u1eddi gian:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ed5i t\u1eeb \u0111\u01a1n v\u1ecb l\u1edbn sang nh\u1ecf (gi\u1edd sang ph\u00fat, ph\u00fat sang gi\u00e2y\u2026) th\u00ec nh\u00e2n v\u1edbi 60 ho\u1eb7c 24, 7\u2026 \u0110\u1ed5i ng\u01b0\u1ee3c l\u1ea1i th\u00ec chia.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/03\/cach-doi-don-vi-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-531872 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-5.jpg\" alt=\"cach-doi-don-vi-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/03\/cach-doi-don-vi-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>C\u00f4ng c\u1ee5 \u0111\u1ed5i \u0111\u01a1n v\u1ecb nhanh tr\u00ean m\u00e1y t\u00ednh v\u00e0 online<\/b><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb tr\u00ean m\u00e1y t\u00ednh:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng &#8220;\u0110\u1ed5i \u0111\u01a1n v\u1ecb&#8221; trong Calculator (m\u00e1y t\u00ednh Windows\/macOS), Google (g\u00f5 tr\u1ef1c ti\u1ebfp &#8220;5 km to m&#8221;\u2026).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u00e1c website, app \u0111\u1ed5i \u0111\u01a1n v\u1ecb:<\/b><span style=\"font-weight: 400;\"> Convertworld, RapidTables, Google Search, \u1ee9ng d\u1ee5ng \u0111\u1ed5i \u0111\u01a1n v\u1ecb tr\u00ean \u0111i\u1ec7n tho\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>L\u01b0u \u00fd:<\/b><span style=\"font-weight: 400;\"> Ki\u1ec3m tra l\u1ea1i b\u1ea3ng quy \u0111\u1ed5i chu\u1ea9n khi \u0111\u1ed5i \u0111\u01a1n v\u1ecb trong c\u00e1c l\u0129nh v\u1ef1c quan tr\u1ecdng.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>L\u01b0u \u00fd khi \u0111\u1ed5i \u0111\u01a1n v\u1ecb v\u00e0 t\u1ed5ng k\u1ebft<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Khi \u0111\u1ed5i \u0111\u01a1n v\u1ecb c\u1ea7n x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng, h\u1ec7 \u0111o l\u01b0\u1eddng v\u00e0 s\u1eed d\u1ee5ng b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i chu\u1ea9n \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>X\u00e1c \u0111\u1ecbnh \u0111\u00fang \u0111\u1ea1i l\u01b0\u1ee3ng:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ea3m b\u1ea3o \u0111ang \u0111\u1ed5i \u0111\u00fang lo\u1ea1i \u0111\u01a1n v\u1ecb (kh\u1ed1i l\u01b0\u1ee3ng, \u0111\u1ed9 d\u00e0i, di\u1ec7n t\u00edch&#8230;).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Ch\u1ecdn \u0111\u00fang h\u1ec7 \u0111o l\u01b0\u1eddng:<\/b><span style=\"font-weight: 400;\"> H\u1ec7 m\u00e9t (SI), Anh-M\u1ef9, ho\u1eb7c h\u1ec7 c\u1ed5 truy\u1ec1n \u0111\u1ec3 \u00e1p d\u1ee5ng quy \u0111\u1ed5i ph\u00f9 h\u1ee3p.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Nh\u1edb c\u00e1c b\u1eadc \u0111\u1ed5i:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ed9 d\u00e0i, kh\u1ed1i l\u01b0\u1ee3ng: m\u1ed7i b\u1eadc nh\u00e2n\/chia 10; di\u1ec7n t\u00edch: m\u1ed7i b\u1eadc nh\u00e2n\/chia 100; th\u1ec3 t\u00edch: m\u1ed7i b\u1eadc nh\u00e2n\/chia 1000.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Ki\u1ec3m tra k\u1ebft qu\u1ea3:<\/b><span style=\"font-weight: 400;\"> \u0110\u1eb7c bi\u1ec7t khi \u0111\u1ed5i \u0111\u01a1n v\u1ecb trong k\u1ef9 thu\u1eadt, x\u00e2y d\u1ef1ng, ho\u1eb7c c\u00e1c l\u0129nh v\u1ef1c y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Th\u01b0\u1eddng xuy\u00ean luy\u1ec7n t\u1eadp:<\/b><span style=\"font-weight: 400;\"> Gi\u00fap ghi nh\u1edb b\u1ea3ng \u0111\u01a1n v\u1ecb v\u00e0 r\u00e8n k\u1ef9 n\u0103ng \u0111\u1ed5i nhanh ch\u00f3ng, ch\u00ednh x\u00e1c.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3:<\/b><span style=\"font-weight: 400;\"> M\u00e1y t\u00ednh, ph\u1ea7n m\u1ec1m, b\u1ea3ng quy \u0111\u1ed5i online gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 h\u1ea1n ch\u1ebf sai s\u00f3t.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/b><\/h2>\n<p style=\"text-align: justify;\"><b>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb m dm cm nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u1ed5i \u0111\u01a1n v\u1ecb gi\u1eefa m\u00e9t (m), decim\u00e9t (dm), centim\u00e9t (cm), b\u1ea1n nh\u1edb m\u1ed7i b\u1eadc c\u00e1ch nhau 10 l\u1ea7n. \u0110\u1ed5i xu\u1ed1ng \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n th\u00ec nh\u00e2n v\u1edbi 10, \u0111\u1ed5i l\u00ean \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n th\u00ec chia cho 10. V\u00ed d\u1ee5: 1 m = 10 dm = 100 cm.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>\u0110\u1ed5i \u0111\u01a1n v\u1ecb mm sang cm, dm, m ra sao?<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">1 milim\u00e9t (mm) = 0,1 cm = 0,01 dm = 0,001 m. \u0110\u1ec3 \u0111\u1ed5i t\u1eeb mm sang \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n, b\u1ea1n chia l\u1ea7n l\u01b0\u1ee3t cho 10, 100, 1000. \u0110\u1ed5i ng\u01b0\u1ee3c l\u1ea1i th\u00ec nh\u00e2n l\u00ean.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>M\u1ed7i \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i trong h\u1ec7 m\u00e9t c\u00e1ch nhau bao nhi\u00eau l\u1ea7n?<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong h\u1ec7 m\u00e9t, m\u1ed7i \u0111\u01a1n v\u1ecb li\u1ec1n k\u1ec1 c\u00e1ch nhau 10 l\u1ea7n. V\u00ed d\u1ee5: 1 m = 10 dm; 1 dm = 10 cm; 1 cm = 10 mm. \u0110\u1ed5i sang nh\u1ecf h\u01a1n th\u00ec nh\u00e2n 10, sang l\u1edbn h\u01a1n chia 10.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Mu\u1ed1n \u0111\u1ed5i \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch (m\u00b3, l\u00edt, dm\u00b3&#8230;) th\u00ec l\u00e0m th\u1ebf n\u00e0o?<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">1 m\u00b3 = 1000 dm\u00b3 = 1000 l\u00edt; 1 dm\u00b3 = 1 l\u00edt; 1 l\u00edt = 1000 cm\u00b3. \u0110\u1ed5i sang nh\u1ecf h\u01a1n nh\u00e2n 1000, sang l\u1edbn h\u01a1n chia 1000.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>C\u00f3 c\u00f4ng c\u1ee5 n\u00e0o gi\u00fap \u0111\u1ed5i \u0111\u01a1n v\u1ecb nhanh nh\u1ea5t kh\u00f4ng?<\/b><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng Google (g\u00f5 tr\u1ef1c ti\u1ebfp ph\u00e9p \u0111\u1ed5i \u0111\u01a1n v\u1ecb), m\u00e1y t\u00ednh Windows\/macOS, ho\u1eb7c c\u00e1c website nh\u01b0 Convertworld, RapidTables \u0111\u1ec3 \u0111\u1ed5i \u0111\u01a1n v\u1ecb nhanh v\u00e0 ch\u00ednh x\u00e1c.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>Xem th\u00eam:<\/b><\/p>\n<ul>\n<li>\n<p class=\"elementor-heading-title elementor-size-default\"><span style=\"color: #339966;\"><strong><a style=\"color: #339966;\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/1-kilogam-kg-bang-bao-nhieu-gam-g-giai-dap-chi-tiet-a-z-ve-don-vi-khoi-luong\/\">1 Kilogam (kg) b\u1eb1ng bao nhi\u00eau Gam (g)? Gi\u1ea3i \u0111\u00e1p chi ti\u1ebft A-Z v\u1ec1 \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng<\/a><\/strong><\/span><\/p>\n<\/li>\n<li>\n<p class=\"elementor-heading-title elementor-size-default\"><span style=\"color: #339966;\"><strong><a style=\"color: #339966;\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/don-vi-do-ap-suat-la-gi\/\">\u0110\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t l\u00e0 g\u00ec? T\u1ed5ng h\u1ee3p c\u00e1c \u0111\u01a1n v\u1ecb \u0111o ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi<\/a><\/strong><\/span><\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb l\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i gi\u00e1 tr\u1ecb t\u1eeb m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng n\u00e0y sang \u0111\u01a1n v\u1ecb kh\u00e1c trong c\u00f9ng m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng. Vi\u1ec7c \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u00fang gi\u00fap \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n, so s\u00e1nh v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c v\u00e0 an to\u00e0n. \u0110\u01a1n v\u1ecb \u0111o [&hellip;]<\/p>\n","protected":false},"author":84,"featured_media":531867,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29235,3910,30453],"tags":[],"class_list":["post-531728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00e1ch \u0110\u1ed5i \u0110\u01a1n V\u1ecb \u0110o L\u01b0\u1eddng Ch\u00ednh X\u00e1c v\u00e0 Nhanh Ch\u00f3ng<\/title>\n<meta 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