mmol/L vs mg/dL: pick one unit for your glucose log
Searches for blood sugar mmol to mg/dL, mmol/L to mg/dL chart, or glucose chart conversion usually mean the diary mixed two unit systems. Labs and meters disagree on display units by country. Blood Snap can store mmol/L or mg/dL — you still need one consistent choice for readable trends.
The usual conversion
- mmol/L → mg/dL: multiply by 18
- mg/dL → mmol/L: divide by 18
Example: 7.0 mmol/L ≈ 126 mg/dL. Rounding differs slightly by table; use your meter's display as the source of truth when logging.
Pick one unit for the log
If your clinic talks in mmol/L, log mmol/L. If your strips and meter show mg/dL, log mg/dL. Switching mid-month makes averages and charts hard to discuss. Blood Snap settings let you choose the unit your diary uses — it does not convert clinical targets for you.
Where this fits with fasting vs after eating
Unit consistency matters as much as tagging fasting vs after eating. See fasting blood sugar vs after eating and normal blood sugar after eating for educational discussion ranges — not in-app cutoffs.
What conversion cannot do
A calculator does not diagnose diabetes, replace an A1C, or fix a mis-set meter. Confirm snap/voice digits against the physical screen every time.
Log one unit in Blood Snap. Store home glucose in mmol/L or mg/dL the way your meter and clinician already speak — then chart and export the diary.
Educational information with public guideline citations. Not medical advice and not a diagnosis. Blood Snap is a personal wellness diary — not a medical device, blood pressure machine, glucometer, or CGM. Always follow your clinician's advice.