{"id":48286,"date":"2025-12-24T00:03:28","date_gmt":"2025-12-24T00:03:28","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/qr-code-size-calculator\/"},"modified":"2025-12-24T00:10:24","modified_gmt":"2025-12-24T00:10:24","slug":"qr-code-size-calculator","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/qr-code-size-calculator\/","title":{"rendered":"C\u00f4ng c\u1ee5 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc m\u00e3 QR"},"content":{"rendered":"<p> <iframe class=\"wrapifai-iframe\" src=\"https:\/\/app.wrapifai.com\/embed\/f84515\" frameborder=\"0\" loading=\"lazy\" id=\"wrapifai-iframe\" width=\"100%\" height=\"400px\" marginheight=\"0\" marginwidth=\"0\" bgcolor=\"white\" style=\"background: white; padding: 12px 0; border-radius: 12px;\"><\/iframe><\/p>\n<h2 id=\"optimize-your-qr-codes-with-the-right-size\" tabindex=\"-1\" class=\"sb h2-sbb-cls\">T\u1ed1i \u01b0u m\u00e3 QR c\u1ee7a b\u1ea1n v\u1edbi k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p<\/h2>\n<p>M\u00e3 QR \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu cho c\u00e1c doanh nghi\u1ec7p, nh\u00e0 ti\u1ebfp th\u1ecb v\u00e0 th\u1eadm ch\u00ed c\u1ea3 c\u00e1c d\u1ef1 \u00e1n c\u00e1 nh\u00e2n, thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa th\u1ebf gi\u1edbi v\u1eadt l\u00fd v\u00e0 k\u1ef9 thu\u1eadt s\u1ed1. Nh\u01b0ng \u0111\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1: n\u1ebfu k\u00edch th\u01b0\u1edbc kh\u00f4ng \u0111\u00fang, kh\u00e1n gi\u1ea3 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n khi qu\u00e9t ch\u00fang, khi\u1ebfn m\u1ecdi n\u1ed7 l\u1ef1c c\u1ee7a b\u1ea1n tr\u1edf n\u00ean v\u00f4 \u00edch. \u0110\u00f3 l\u00e0 l\u00fac m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 QR l\u00fd t\u01b0\u1edfng tr\u1edf n\u00ean h\u1eefu \u00edch. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 vi\u1ec7c d\u00e1n m\u1ed9t m\u00e3 l\u00ean t\u1edd r\u01a1i; m\u00e0 l\u00e0 \u0111\u1ea3m b\u1ea3o n\u00f3 ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru cho m\u1ecdi ng\u01b0\u1eddi.<\/p>\n<h2 id=\"why-size-matters-for-qr-codes\" tabindex=\"-1\" class=\"sb h2-sbb-cls\">T\u1ea1i sao k\u00edch th\u01b0\u1edbc l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi m\u00e3 QR<\/h2>\n<p>Khi l\u00ean k\u1ebf ho\u1ea1ch cho m\u1ed9t chi\u1ebfn d\u1ecbch ho\u1eb7c s\u1ef1 ki\u1ec7n, \u0111i\u1ec1u cu\u1ed1i c\u00f9ng b\u1ea1n mu\u1ed1n l\u00e0 m\u1ed9t m\u00e3 QR kh\u00f4ng th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c v\u00ec n\u00f3 qu\u00e1 nh\u1ecf so v\u1edbi kho\u1ea3ng c\u00e1ch nh\u00ecn. C\u00e1c thi\u1ebft b\u1ecb kh\u00e1c nhau, t\u1eeb \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u1ebfn m\u00e1y qu\u00e9t chuy\u00ean d\u1ee5ng, c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc c\u00e1c m\u1eabu n\u00e0y kh\u00e1c nhau. M\u1ed9t quy t\u1eafc chung l\u00e0 duy tr\u00ec t\u1ef7 l\u1ec7 th\u00edch h\u1ee3p gi\u1eefa k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a m\u00e3 v\u00e0 kho\u1ea3ng c\u00e1ch m\u00e0 m\u1ecdi ng\u01b0\u1eddi s\u1ebd \u0111\u1ee9ng khi c\u1ed1 g\u1eafng qu\u00e9t n\u00f3. B\u1eb1ng c\u00e1ch t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p nh\u1ea5t d\u1ef1a tr\u00ean c\u00e1c y\u1ebfu t\u1ed1 th\u1ef1c t\u1ebf, b\u1ea1n c\u00f3 th\u1ec3 tr\u00e1nh ng\u01b0\u1eddi d\u00f9ng th\u1ea5t v\u1ecdng v\u00e0 b\u1ecf l\u1ee1 c\u01a1 h\u1ed9i. C\u00e1c c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ee5c \u0111\u00edch n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh, \u0111\u1ea3m b\u1ea3o m\u00e3 c\u1ee7a b\u1ea1n th\u1ef1c t\u1ebf v\u00e0 hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea1n ph\u1ea3i t\u1ef1 m\u00ecnh t\u00ecm hi\u1ec3u c\u00e1c ph\u00e9p to\u00e1n ph\u1ee9c t\u1ea1p.<\/p>\n<h2 id=\"faqs\" tabindex=\"-1\" class=\"sb h2-sbb-cls\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 id=\"why-does-qr-code-size-matter-for-scanning\" tabindex=\"-1\" data-faq-q>T\u1ea1i sao k\u00edch th\u01b0\u1edbc m\u00e3 QR l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c qu\u00e9t?<\/h3>\n<p>K\u00edch th\u01b0\u1edbc c\u1ee7a m\u00e3 QR \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 d\u1ec5 d\u00e0ng qu\u00e9t \u0111\u01b0\u1ee3c n\u00f3. N\u1ebfu n\u00f3 qu\u00e1 nh\u1ecf so v\u1edbi kho\u1ea3ng c\u00e1ch qu\u00e9t, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n khi \u0111\u1ecdc m\u1eabu, \u0111\u1eb7c bi\u1ec7t v\u1edbi c\u00e1c camera ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p nh\u01b0 tr\u00ean \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u0169 h\u01a1n. C\u00f4ng c\u1ee5 c\u1ee7a ch\u00fang t\u00f4i s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc-kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u\u2014th\u01b0\u1eddng l\u00e0 1:10 cho \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh\u2014\u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 \u0111\u1ee7 l\u1edbn \u0111\u1ec3 \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n r\u00f5 r\u00e0ng. H\u00e3y h\u00ecnh dung n\u00f3 gi\u1ed1ng nh\u01b0 \u0111\u1ecdc v\u0103n b\u1ea3n nh\u1ecf t\u1eeb xa; l\u1edbn h\u01a1n th\u01b0\u1eddng t\u1ed1t h\u01a1n cho \u0111\u1ebfn m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<h3 id=\"can-i-use-this-tool-for-any-type-of-qr-code\" tabindex=\"-1\" data-faq-q>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0y cho b\u1ea5t k\u1ef3 lo\u1ea1i m\u00e3 QR n\u00e0o kh\u00f4ng?<\/h3>\n<p>Ch\u1eafc ch\u1eafn r\u1ed3i! Cho d\u00f9 b\u1ea1n \u0111ang t\u1ea1o m\u00e3 QR cho m\u1ed9t li\u00ean k\u1ebft trang web, m\u1ed9t menu hay m\u1ed9t danh thi\u1ebfp, khuy\u1ebfn ngh\u1ecb v\u1ec1 k\u00edch th\u01b0\u1edbc t\u1eeb c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec1u \u00e1p d\u1ee5ng ph\u1ed5 bi\u1ebfn. Y\u1ebfu t\u1ed1 ch\u00ednh l\u00e0 m\u00f4i tr\u01b0\u1eddng qu\u00e9t\u2014kho\u1ea3ng c\u00e1ch v\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb\u2014m\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 t\u00ednh \u0111\u1ebfn. Ch\u1ec9 c\u1ea7n \u0111\u1ea3m b\u1ea3o b\u1ec1 m\u1eb7t b\u1ea1n in kh\u00f4ng l\u00e0m bi\u1ebfn d\u1ea1ng m\u00e3, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng.<\/p>\n<h3 id=\"what-if-im-unsure-about-the-scanning-distance\" tabindex=\"-1\" data-faq-q>\u0110i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu t\u00f4i kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 kho\u1ea3ng c\u00e1ch qu\u00e9t?<\/h3>\n<p>\u0110\u1eebng lo l\u1eafng! N\u1ebfu b\u1ea1n kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 kho\u1ea3ng c\u00e1ch ch\u00ednh x\u00e1c, h\u00e3y \u0111\u01b0a ra m\u1ed9t ph\u1ecfng \u0111o\u00e1n c\u00f3 c\u01a1 s\u1edf d\u1ef1a tr\u00ean v\u1ecb tr\u00ed \u0111\u1eb7t m\u00e3 QR. V\u00ed d\u1ee5, m\u1ed9t \u00e1p ph\u00edch tr\u00ean t\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c qu\u00e9t t\u1eeb 1-2 m\u00e9t, trong khi nh\u00e3n s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 g\u1ea7n h\u01a1n. Ch\u1ecdn kho\u1ea3ng c\u00e1ch \u1edf m\u1ee9c cao h\u01a1n n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1eafc ch\u1eafn\u2014c\u00f4ng c\u1ee5 c\u1ee7a ch\u00fang t\u00f4i s\u1ebd \u0111\u1ec1 xu\u1ea5t m\u1ed9t k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n m\u1ed9t ch\u00fat \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng \u0111\u1ecdc ngay c\u1ea3 khi m\u1ecdi ng\u01b0\u1eddi qu\u00e9t t\u1eeb xa h\u01a1n.<\/p>\n<p>  <script src='https:\/\/app.wrapifai.com\/embed\/index.js'><\/script><script async type=\"text\/javascript\" src=\"https:\/\/app.seobotai.com\/banner\/banner.js?id=694b2dd012e0ddc125f21439\"><\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>C\u1ea7n k\u00edch th\u01b0\u1edbc m\u00e3 QR ph\u00f9 h\u1ee3p? S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n mi\u1ec5n ph\u00ed c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc t\u1ed1i \u01b0u d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch qu\u00e9t v\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb. H\u00e3y th\u1eed ngay!<\/p>","protected":false},"author":17,"featured_media":48287,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-48286","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>QR Code Size Calculator<\/title>\n<meta name=\"description\" content=\"Need the right QR code size? 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Try it now!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-size-calculator\/\" \/>\n<meta property=\"og:site_name\" content=\"Pageloot\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/pageloot\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-24T00:03:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-24T00:10:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2025\/12\/image_8b0c7af6dd12eb160d41c5eaf9d41fad.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1536\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Siim T\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:site\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Siim T\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"QR Code Size Calculator\",\"datePublished\":\"2025-12-24T00:03:28+00:00\",\"dateModified\":\"2025-12-24T00:10:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/\"},\"wordCount\":455,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/image_8b0c7af6dd12eb160d41c5eaf9d41fad.jpeg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/\",\"name\":\"QR Code Size Calculator\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-size-calculator\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/image_8b0c7af6dd12eb160d41c5eaf9d41fad.jpeg\",\"datePublished\":\"2025-12-24T00:03:28+00:00\",\"dateModified\":\"2025-12-24T00:10:24+00:00\",\"description\":\"Need the right QR code size? 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