{"id":65423,"date":"2026-09-28T18:27:55","date_gmt":"2026-09-28T15:27:55","guid":{"rendered":"https:\/\/wpcalc.com\/en\/?p=65423"},"modified":"2026-09-29T15:19:09","modified_gmt":"2026-09-29T12:19:09","slug":"blood-sugar-units-converter-mg-dl-to-mmol-l","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/converters\/blood-sugar-units-converter-mg-dl-to-mmol-l\/","title":{"rendered":"Blood Sugar Units Converter (mg\/dL to mmol\/L)"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Blood Sugar Units Converter (mg\/dL \u2194 mmol\/L)<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"65423\" data-favorite-title=\"Blood Sugar Converter\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/converters\/blood-sugar-units-converter-mg-dl-to-mmol-l\/\" data-favorite-excerpt=\"Convert blood glucose readings between mg\/dL and mmol\/L instantly, and see how your fasting value compares to normal, prediabetes and diabetes reference ranges.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-chemistry\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/converters\/blood-sugar-units-converter-mg-dl-to-mmol-l\/\" method=\"POST\" class=\"calculator\" id=\"calculator-65423\" data-post=\"65423\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Glucose value<\/label><div class=\"term\">G<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><div class=\"field-group\"><input type=\"text\" name=\"glucose_value\" id=\"field-1\" aria-describedby=\"calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0\" value=\"95\"\/><div class=\"grid grid-cols-1\"><select id=\"field-2\" name=\"unit\" aria-label=\"Unit\"><option value=\"mg\" selected>mg\/dL<\/option><option value=\"mmol\">mmol\/L<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><small id=\"calc-info-1\">Enter your glucose reading and pick its unit \u2014 it will be converted to the other unit<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"65423\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Converted glucose value<\/span><span class=\"result-term\">C<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result is-column\" id=\"output-2\"><span class=\"field-title\"><span>Interpretation (fasting glucose)<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result is-column\" id=\"output-3\"><span class=\"field-title\"><span>Typical reference ranges<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copy Result\" aria-label=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copy link to this calculation<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"65423\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Blood Sugar Converter Formula<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ \\text{mmol\/L} = \\frac{\\text{mg\/dL}}{18.016} \\quad\\text{and}\\quad \\text{mg\/dL} = \\text{mmol\/L} \\times 18.016 \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Where:<\/strong><\/p>\n<ul>\n<li>\\(\\text{mg\/dL}\\) \u2014 glucose concentration in milligrams per deciliter (used in the USA and a few other countries)<\/li>\n<li>\\(\\text{mmol\/L}\\) \u2014 glucose concentration in millimoles per liter (used in most of the world, including Europe, Canada and Australia)<\/li>\n<li>\\(18.016\\) \u2014 the conversion factor, derived from the molecular weight of glucose (180.156 g\/mol)<\/li>\n<\/ul>\n<p>The two units describe the same concentration on different scales. Because one mole of glucose weighs 180.156 grams, every 1 mmol\/L corresponds to 18.016 mg\/dL. In everyday use many people round this to 18.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-459\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Blood Sugar Converter \u2013 Calculation Example<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Example:<\/strong> a fasting glucose meter reading of 95 mg\/dL needs to be converted to mmol\/L.<\/p>\n<p>\\[ \\text{mmol\/L} = \\frac{95}{18.016} = 5.27 \\]<\/p>\n<p><strong>Result:<\/strong> 95 mg\/dL = 5.27 mmol\/L. This value falls inside the normal fasting range of 70\u201399 mg\/dL (3.9\u20135.5 mmol\/L).<\/p>\n<p>\n\r\n<\/section>\n<h2>How to use the calculator<\/h2>\n<ol>\n<li>Enter your reading in the <strong>Glucose value<\/strong> field.<\/li>\n<li>Choose the unit of your reading \u2014 <strong>mg\/dL<\/strong> or <strong>mmol\/L<\/strong> \u2014 from the <strong>Unit<\/strong> dropdown next to the input field.<\/li>\n<li>Read the result under <strong>Your Results<\/strong>: the converted value in the other unit, an interpretation for fasting glucose, and a table of typical reference ranges.<\/li>\n<\/ol>\n<h2>Why two units for blood sugar?<\/h2>\n<p>Blood glucose is reported in mg\/dL in the United States, Japan and a handful of other countries, while the SI unit mmol\/L is standard in the UK, Canada, Australia and most of Europe. The difference matters when reading research articles, comparing meter readings abroad, or discussing results with doctors trained elsewhere \u2014 the same measurement can look dramatically different numerically. A normal fasting value of 5 mmol\/L, for example, appears as 90 mg\/dL, roughly eighteen times larger.<\/p>\n<p>The conversion is not an arbitrary rule of thumb: it follows directly from chemistry. Concentration in mmol\/L counts particles (moles), while mg\/dL counts mass. Since one mole of glucose weighs 180.156 g, multiplying mmol\/L by 18.016 gives mg\/dL, and dividing mg\/dL by 18.016 returns mmol\/L. For quick mental estimates, dividing by 18 is accurate to about 0.1%.<\/p>\n<p>The calculator also places your value on the standard fasting glucose scale used by the American Diabetes Association and the World Health Organization. Keep in mind that these thresholds apply to <em>fasting<\/em> plasma glucose (measured after at least 8 hours without food). Readings taken after a meal are expected to be higher, and different criteria \u2014 such as the HbA1c test or an oral glucose tolerance test \u2014 are used for an actual diagnosis.<\/p>\n<h2>Interpreting the reference ranges<\/h2>\n<table>\n<thead>\n<tr>\n<th>Category (fasting)<\/th>\n<th>mg\/dL<\/th>\n<th>mmol\/L<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hypoglycemia<\/td>\n<td>below 70<\/td>\n<td>below 3.9<\/td>\n<\/tr>\n<tr>\n<td>Normal<\/td>\n<td>70\u201399<\/td>\n<td>3.9\u20135.5<\/td>\n<\/tr>\n<tr>\n<td>Prediabetes<\/td>\n<td>100\u2013125<\/td>\n<td>5.6\u20136.9<\/td>\n<\/tr>\n<tr>\n<td>Diabetes<\/td>\n<td>126 or higher<\/td>\n<td>7.0 or higher<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A single reading above or below a threshold is not a diagnosis. Blood glucose fluctuates through the day with food, exercise, stress and illness, so doctors rely on repeated measurements and additional tests before drawing conclusions.<\/p>\n<h2>Assumptions and limitations<\/h2>\n<ul>\n<li><strong>Fasting thresholds only.<\/strong> The interpretation assumes the reading was taken after at least 8 hours of fasting. Post-meal (postprandial) values are normally higher and should be judged against different targets.<\/li>\n<li><strong>Plasma vs. whole blood.<\/strong> The reference ranges refer to plasma glucose. Some home glucose meters report whole-blood values, which read roughly 10\u201312% lower; check your meter's documentation.<\/li>\n<li><strong>Not medical advice.<\/strong> This tool converts units and compares them to published reference ranges. It cannot diagnose hypoglycemia, prediabetes or diabetes. If a result is unexpected or you feel unwell, consult a healthcare professional.<\/li>\n<li><strong>Special situations.<\/strong> Targets for pregnant women, children and people already diagnosed with diabetes may differ from the general ranges shown here.<\/li>\n<\/ul>\n<p>If you often convert between unit systems, you may also find our <a href=\"https:\/\/wpcalc.com\/en\/converters\/fahrenheit\/\">Fahrenheit to Celsius temperature converter<\/a>, the <a href=\"https:\/\/wpcalc.com\/en\/converters\/mpg-to-l-100km-fuel-economy-converter\/\">fuel economy converter (MPG \u2194 L\/100 km)<\/a> and the <a href=\"https:\/\/wpcalc.com\/en\/converters\/speed-units-converter\/\">speed unit converter<\/a> useful.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Convert blood glucose readings between mg\/dL and mmol\/L instantly, and see how your fasting value compares to normal, prediabetes and diabetes reference ranges.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-65423","post","type-post","status-publish","format-standard","hentry","category-converters","tag-chemistry-units"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65423","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=65423"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65423\/revisions"}],"predecessor-version":[{"id":65674,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/65423\/revisions\/65674"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=65423"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=65423"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=65423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}