{"id":3489,"date":"2026-05-02T11:15:12","date_gmt":"2026-05-02T10:15:12","guid":{"rendered":"https:\/\/livingdiabetes.com\/glucose-unit-converter\/"},"modified":"2026-05-02T11:26:19","modified_gmt":"2026-05-02T10:26:19","slug":"glucose-unit-converter","status":"publish","type":"page","link":"https:\/\/livingdiabetes.com\/ur\/glucose-unit-converter\/","title":{"rendered":"Blood Glucose Unit Converter \u2014 mmol\/L to mg\/dL (and back)"},"content":{"rendered":"<p><strong>Quickly convert blood glucose between mmol\/L (UK and most of the world) and mg\/dL (US, Germany, France).<\/strong> Type any value, get the other instantly. Uses the standard conversion factor 18.018 mg\/dL per 1 mmol\/L.<\/p>\n\n\n\n<style>\n.ld-calc{max-width:680px;margin:1.5em 0;padding:1.5em;border:1px solid #d4dde5;border-radius:8px;background:#f8fafc;font-family:inherit}\n.ld-calc h3{margin-top:0;color:#1a4870;font-size:1.25em}\n.ld-row{display:flex;flex-wrap:wrap;gap:.75em;margin-bottom:.85em;align-items:center}\n.ld-row label{flex:1 1 220px;font-weight:600}\n.ld-row input{flex:0 0 150px;padding:.5em .65em;font-size:1em;border:1px solid #b8c5d3;border-radius:4px;background:#fff}\n.ld-row input:focus{outline:none;border-color:#1a8cb6;box-shadow:0 0 0 3px rgba(26,140,182,.15)}\n.ld-result{margin-top:1.25em;padding:1em 1.25em;background:#e8f4f9;border-left:4px solid #1a8cb6;border-radius:4px;font-size:1.05em}\n.ld-result .big{font-size:1.5em;font-weight:700;color:#0d5a78}\n.ld-result .interp{margin-top:.5em}\n@media (max-width:520px){.ld-row label{flex-basis:100%}.ld-row input{flex-basis:100%}}\n<\/style>\n\n<div class=\"ld-calc\">\n<h3>Blood Glucose Unit Converter<\/h3>\n<div class=\"ld-row\"><label for=\"ldu-mmol\">mmol\/L (UK \/ international)<\/label><input type=\"number\" id=\"ldu-mmol\" step=\"0.1\" min=\"0\" max=\"50\" placeholder=\"e.g. 7.0\"><\/div>\n<div class=\"ld-row\"><label for=\"ldu-mg\">mg\/dL (US)<\/label><input type=\"number\" id=\"ldu-mg\" step=\"1\" min=\"0\" max=\"900\" placeholder=\"e.g. 126\"><\/div>\n<div class=\"ld-result\" id=\"ldu-out\" style=\"display:none\"><\/div>\n<\/div>\n\n<script>\n(function(){\nvar mmol=document.getElementById('ldu-mmol'),mg=document.getElementById('ldu-mg'),out=document.getElementById('ldu-out');\nfunction interp(m){\nvar c='',color='#0d5a78';\nif(m<3.0){c='Hypoglycaemia (low) \u2014 treat with 15 g fast-acting carbohydrate, recheck in 15 minutes.';color='#a22';}\nelse if(m<3.9){c='Borderline low (sub-target). Treat if symptomatic.';color='#c44';}\nelse if(m<5.6){c='Within the typical fasting target range.';color='#2a7a3a';}\nelse if(m<7.0){c='Within target \/ pre-diabetes territory if fasting.';color='#0d5a78';}\nelse if(m<10.0){c='Above typical pre-meal target. Routine post-meal peak in many people on insulin.';color='#c97f2a';}\nelse if(m<13.9){c='Significantly raised. Consider correction dose if on insulin; check ketones if type 1.';color='#c44';}\nelse{c='Very high. People with type 1 diabetes should check ketones. Same-day medical advice may be needed.';color='#a22';}\nreturn '<div class=\"big\" style=\"color:'+color+'\">'+m.toFixed(1)+' mmol\/L  \/  '+Math.round(m*18.018)+' mg\/dL<\/div><div class=\"interp\"><strong>Interpretation:<\/strong> '+c+'<\/div>';\n}\nfunction update(src){\nvar v;\nif(src===mmol){v=parseFloat(mmol.value);if(!isFinite(v)||v<0||v>50){out.style.display='none';return;}mg.value=Math.round(v*18.018);}\nelse{v=parseFloat(mg.value);if(!isFinite(v)||v<0||v>900){out.style.display='none';return;}v=v\/18.018;mmol.value=v.toFixed(1);}\nout.innerHTML=interp(v);out.style.display='block';\n}\nmmol.addEventListener('input',function(){update(mmol);});\nmg.addEventListener('input',function(){update(mg);});\n})();\n<\/script>\n\n\n\n<h2 class=\"wp-block-heading\">The conversion formula<\/h2>\n\n\n\n<p><strong>mg\/dL = mmol\/L \u00d7 18.018<\/strong><br><strong>mmol\/L = mg\/dL \u00f7 18.018<\/strong><\/p>\n\n\n\n<p>The factor 18.018 comes from glucose&#8217;s molecular weight (180.16 g\/mol) and the conversion between dL and L. For most clinical purposes, &#8220;\u00d7 18&#8221; or &#8220;\u00f7 18&#8221; is close enough \u2014 the calculator above uses the precise value.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick reference table<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>mmol\/L<\/th><th>mg\/dL<\/th><th>Typical context<\/th><\/tr><\/thead><tbody>\n<tr><td>3.0<\/td><td>54<\/td><td>Hypoglycaemia \u2014 treat immediately<\/td><\/tr>\n<tr><td>3.9<\/td><td>70<\/td><td>ADA hypoglycaemia threshold<\/td><\/tr>\n<tr><td>4.0<\/td><td>72<\/td><td>Lower bound of typical fasting target<\/td><\/tr>\n<tr><td>5.6<\/td><td>100<\/td><td>Upper bound of normal fasting glucose<\/td><\/tr>\n<tr><td>7.0<\/td><td>126<\/td><td>Diabetes diagnosis threshold (fasting)<\/td><\/tr>\n<tr><td>7.8<\/td><td>140<\/td><td>2-hour post-meal threshold for impaired glucose tolerance<\/td><\/tr>\n<tr><td>10.0<\/td><td>180<\/td><td>Common upper limit for time-in-range (TIR)<\/td><\/tr>\n<tr><td>11.1<\/td><td>200<\/td><td>Diabetes diagnosis threshold (random \/ OGTT 2h)<\/td><\/tr>\n<tr><td>13.9<\/td><td>250<\/td><td>Significant hyperglycaemia<\/td><\/tr>\n<tr><td>16.7<\/td><td>300<\/td><td>Mark \u2014 check ketones in type 1 diabetes<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Why do different countries use different units?<\/h3>\n\n\n\n<p>mmol\/L is the SI unit and is used in the UK, Europe, Australia, Canada, and most of Asia. mg\/dL is the older &#8220;conventional&#8221; unit and remains standard in the US, France, Germany, and parts of Latin America. Both measure the same thing \u2014 the concentration of glucose in the blood \u2014 just on different scales.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Does my CGM use mmol\/L or mg\/dL?<\/h3>\n\n\n\n<p>Whichever your country&#8217;s regulator allows. UK Dexcom, Libre, and Eversense devices default to mmol\/L; US devices default to mg\/dL. Most allow you to switch in the app settings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quick mental conversion?<\/h3>\n\n\n\n<p>Multiply mmol\/L by 18 to get a close mg\/dL. So 5 \u2192 90, 7 \u2192 126, 10 \u2192 180. To go the other way: divide by 18. So 100 \u2192 5.5, 200 \u2192 11.1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related calculators<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/livingdiabetes.com\/ur\/hba1c-calculator\/\">HbA1c \u2192 eAG Converter<\/a><\/li>\n<li><a href=\"https:\/\/livingdiabetes.com\/ur\/carb-counter\/\">Carb Counter &amp; Bolus Calculator<\/a><\/li>\n<li><a href=\"https:\/\/livingdiabetes.com\/ur\/calculators\/\">All diabetes calculators<\/a><\/li>\n<\/ul>\n\n\n\n<p><em>Reviewed: May 2026.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Convert blood glucose between mmol\/L (UK \/ international) and mg\/dL (US) instantly. Uses the precise factor of 18.018. Includes interpretation of the result.<\/p>","protected":false},"author":4,"featured_media":3506,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3489","page","type-page","status-publish","has-post-thumbnail","hentry"],"rttpg_featured_image_url":{"full":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter.png",1200,630,false],"landscape":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter.png",1200,630,false],"portraits":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter.png",1200,630,false],"thumbnail":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-150x150.png",150,150,true],"medium":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-300x158.png",300,158,true],"large":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-1024x538.png",640,336,true],"1536x1536":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter.png",1200,630,false],"2048x2048":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter.png",1200,630,false],"trp-custom-language-flag":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-18x9.png",18,9,true],"post-thumbnail":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-300x158.png",300,158,true],"minimalistblogger-grid":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-350x230.png",350,230,true],"minimalistblogger-slider":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-850x446.png",850,446,true],"minimalistblogger-small":["https:\/\/livingdiabetes.com\/wp-content\/uploads\/2026\/05\/og_glucose-unit-converter-300x180.png",300,180,true]},"rttpg_author":{"display_name":"Claude SEO","author_link":"https:\/\/livingdiabetes.com\/ur\/author\/claude-seo\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Convert blood glucose between mmol\/L (UK \/ international) and mg\/dL (US) instantly. Uses the precise factor of 18.018. Includes interpretation of the result.","_links":{"self":[{"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/pages\/3489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/comments?post=3489"}],"version-history":[{"count":1,"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/pages\/3489\/revisions"}],"predecessor-version":[{"id":3507,"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/pages\/3489\/revisions\/3507"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/media\/3506"}],"wp:attachment":[{"href":"https:\/\/livingdiabetes.com\/ur\/wp-json\/wp\/v2\/media?parent=3489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}