# mmol/L to mg/dl Conversion **URL:** \ **Category:** Share\ **Tags:** mmol, mgdl, conversion\ **Created:** [December 19, 2017, 10:16pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911 "2017-12-19T22:16:08Z")\ **Posts on this page:** 20\ **Page:** 5
**Author:** ![Eric](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/eric/32/9209_2.png) [@Eric](https://forum.fudiabetes.org/u/Eric)\ **Post date:** [September 4, 2020, 3:52pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/81 "2020-09-04T15:52:46Z")
Welcome to FUD, @Lizzyb! 😀 ---
**Author:** ![Carol](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/carol/32/4894_2.png) [@Carol](https://forum.fudiabetes.org/u/Carol)\ **Post date:** [September 4, 2020, 10:06pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/82 "2020-09-04T22:06:15Z")
Hi @Lizzyb! Glad you spoke up for our Aussie and NZ friends. Welcome to FUD and we’ll hear more from you. 🌻 ---
**Author:** ![Lizzyb](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@Lizzyb](https://forum.fudiabetes.org/u/Lizzyb)\ **Post date:** [September 5, 2020, 2:22am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/83 "2020-09-05T02:22:20Z")
🙂🇦🇺👍 ---
**Author:** ![Lizzyb](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@Lizzyb](https://forum.fudiabetes.org/u/Lizzyb)\ **Post date:** [September 5, 2020, 2:25am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/84 "2020-09-05T02:25:00Z")
Thanks for the lovely welcome! ---
**Author:** ![Beacher](https://avatars.discourse-cdn.com/v4/letter/b/a6a055/32.png) [@Beacher](https://forum.fudiabetes.org/u/Beacher)\ **Post date:** [September 5, 2020, 1:44pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/85 "2020-09-05T13:44:48Z")
Welcome, Australia – land of Tim Tams and Tim Winton. (Both, luckily, available in 🇨🇦 and best enjoyed together.) ---
**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\ **Post date:** [September 5, 2020, 5:17pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/86 "2020-09-05T17:17:27Z")
I have been to Canada, but apparently I don’t speak Canadian. Hmm. ---
**Author:** ![jim26](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/jim26/32/9780_2.png) [@jim26](https://forum.fudiabetes.org/u/jim26)\ **Post date:** [September 5, 2020, 6:52pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/87 "2020-09-05T18:52:10Z")
Tim Tams are oh soooo dangerous. I could easily eat an entire package. ---
**Author:** ![Lizzyb](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@Lizzyb](https://forum.fudiabetes.org/u/Lizzyb)\ **Post date:** [September 24, 2020, 1:14am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/88 "2020-09-24T01:14:24Z")
Chris just remember to say “anyways” and “eh?” and you’re pretty much a local!!! Last visit was last Christmas where an Uncle introduced us to the delightful poutine. Yum!!! Between poutine and Tim Tams, we’re all in trouble!! ---
**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\ **Post date:** [September 24, 2020, 2:11am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/89 "2020-09-24T02:11:39Z")
Being from Minnesota, I got the “eh” down pat. Poutine is lovely, I have had a few good ones in Montreal, but believe it or not I had my best Poutine in Wisconsin with fried cheese curds. ---
**Author:** ![TomH](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/tomh/32/9063_2.png) [@TomH](https://forum.fudiabetes.org/u/TomH)\ **Post date:** [February 3, 2021, 8:37pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/90 "2021-02-03T20:37:43Z")
Just had to go look up Tim Tams, sounds delicious…and totally off limits! ---
**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\ **Post date:** [February 3, 2021, 8:47pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/91 "2021-02-03T20:47:45Z")
Welcome @TomH! With enough insulin you can cause a low and then use the Tim Tam’s to recover. Just saying 😉 ---
**Author:** ![jbowler](https://avatars.discourse-cdn.com/v4/letter/j/e274bd/32.png) [@jbowler](https://forum.fudiabetes.org/u/jbowler)\ **Post date:** [February 4, 2021, 2:55am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/92 "2021-02-04T02:55:20Z")
Yep. Do that all the time. ---
**Author:** ![Caterpillar](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/caterpillar/32/9474_2.png) [@Caterpillar](https://forum.fudiabetes.org/u/Caterpillar)\ **Post date:** [July 30, 2021, 4:20pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/93 "2021-07-30T16:20:36Z")
Thank you. This is great! ---
**Author:** ![Strat1117](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/strat1117/32/10482_2.png) [@Strat1117](https://forum.fudiabetes.org/u/Strat1117)\ **Post date:** [January 12, 2023, 1:44am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/94 "2023-01-12T01:44:09Z")
Easier still, multiply by 20 and reduce by 10%. ---
**Author:** ![TomH](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/tomh/32/9063_2.png) [@TomH](https://forum.fudiabetes.org/u/TomH)\ **Post date:** [January 12, 2023, 5:04pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/95 "2023-01-12T17:04:33Z")
So much better than trying to multiply by 18! ---
**Author:** ![larry-butler](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/larry-butler/32/10467_2.png) [@larry-butler](https://forum.fudiabetes.org/u/larry-butler)\ **Post date:** [February 10, 2023, 6:30pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/96 "2023-02-10T18:30:42Z")
I developed T1 55 years ago. At one point in 80s my control via test strips & MDI syringes waned & I sought a new Endocrinologist. Was offered choice of Pump or Pens, chose pens as could not conceive wearing a tubed pump 24x7. 5 years ago, newer PCP enrolled me for Dexcom CGM, got unprecedented insight & better control. Learning Dexcom features online, read about Omnipod tubeless pumps. Convinced my Endo to prescribe, started Omnipod 5 in automated mode Dec 25. Was able to set it up from Online training & videos to approximate my MDI dosages, called OP 24x7 helpful customer support a couple times to clarify settings so I could revise. They are not allowed to offer individual medical advice, but can explain all the settings. The convenience of dosing for meals & snacks is so vastly greater than with pens that I do it more frequently, using smaller doses. Only the background basal dosing every 5 minute interval is automated. Unlike 24hr long insulins, it will diminish/cease as one’s mgdl falls beneath lower bound, resume/increase as it rises. I gather one can get even closer more aggressive control with DIY combos lacking vendor support, but I am happy with this. ---
**Author:** ![Strat1117](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/strat1117/32/10482_2.png) [@Strat1117](https://forum.fudiabetes.org/u/Strat1117)\ **Post date:** [February 10, 2023, 9:40pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/97 "2023-02-10T21:40:59Z")
Hi @larry-butler, welcome to FUD and thank you for sharing. You’ve found a great place, and we all look forward to sharing our experiences with you, as well as getting the benefit of yours. May I suggest you hop on over to the “Welcome” thread and introduce yourself so we can give you a proper welcome. Or maybe @ClaudnDaye or one of the others with a higher pay-grade than me can move your introductory post over there, where it is likely to be seen by more members. ---
**Author:** ![CRB](https://avatars.discourse-cdn.com/v4/letter/c/ce7236/32.png) [@CRB](https://forum.fudiabetes.org/u/CRB)\ **Post date:** [November 17, 2023, 3:23am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/98 "2023-11-17T03:23:50Z")
Thank you! CR ---
**Author:** ![Yve65](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/yve65/32/12821_2.png) [@Yve65](https://forum.fudiabetes.org/u/Yve65)\ **Post date:** [June 24, 2026, 2:05am UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/100 "2026-06-24T02:05:47Z")
OMG!!! My diagnosis BG was 998 mg/dL, which converts to 55.4 mmol/L. Yet another way to be appalled at my own diagnosis story! 🙀 ---
**Author:** ![jbowler](https://avatars.discourse-cdn.com/v4/letter/j/e274bd/32.png) [@jbowler](https://forum.fudiabetes.org/u/jbowler)\ **Post date:** [June 25, 2026, 8:21pm UTC](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911/101 "2026-06-25T20:21:22Z")
> [@Strat1117](#): > > multiply by 20 and reduce by 10%. Think of a number, double it, remember the result, multiple by 10 and subtract the remembered result. (Or subtract the original number twice, this can be easier.) Going the other way; divide by 2 then _add_ 1/10th of the result and divide by 10. If you want you can then add 1/100 in addition at the second step to get something which is pretty close to exact (_more_ close than 1/18 I think!) In practice for forum posts this is more than accurate enough: mg/dL: just quote the first two digits. Simply divide by 20 (divide by 10 then halve it) to get mmol/L and just quote the first two digits. mmol/L: just quote the first two digits. Multiple by 10 then double to get mg/dL and just quote the first two digits. Sometimes it might be good to get more accurate for low BG; “4” is actually about “70”, not “80”, but by “100” “5” should be fine. 5 is 90, not 100. The point is to make it easier for people who speak the other language to understand a complete post. BG measurements, particularly high and low, aren’t that accurate, at best 10%, and a factor of 20 is 10% bigger than a factor of 18. [Previous page](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911.md?page=4) [Next page](https://forum.fudiabetes.org/t/mmol-l-to-mg-dl-conversion/2911.md?page=6)