Glucose mg/dL → mmol/L
Convert blood or plasma glucose from mg/dL to mmol/L
Sources last checked: 2026-10-13
Glucose mg/dL → mmol/L
Convert blood or plasma glucose from mg/dL to mmol/L
Converts units only. Capillary, venous plasma and whole-blood glucose differ; diagnostic thresholds refer to venous plasma.
What is the Glucose mg/dL → mmol/L?
This page converts glucose from mg/dL to mmol/L, the SI unit used in most European guidelines and in the UK, Scandinavia and the Netherlands. It multiplies by 0.0555, the factor in the AMA Manual of Style SI table, derived from glucose’s molar mass of 180.16 g/mol.
When to use it
- Reading SI-based guidelines with mg/dL lab values
- Converting meter readings for patients or colleagues abroad
- Exam questions mixing units
When not to use it
- HbA1c values
- Urine glucose reported semi-quantitatively
How it is calculated
Glucose (mmol/L) = glucose (mg/dL) × 0.0555
Clinical pearls and limitations
- Converts units only. Capillary, venous plasma and whole-blood glucose differ; diagnostic thresholds refer to venous plasma.
- Quick check: mg/dL ÷ 18 ≈ mmol/L (126 → 7.0; 200 → 11.1).
- Report mmol/L to one decimal place.
- Fasting 126 mg/dL and 2-hour 200 mg/dL correspond to the familiar 7.0 and 11.1 mmol/L thresholds.
Frequently asked questions
How do I convert glucose from mg/dL to mmol/L?
Multiply by 0.0555 (or divide by 18). Example: 100 mg/dL = 5.6 mmol/L.
What is 126 mg/dL in mmol/L?
7.0 mmol/L.
What is 70 mg/dL in mmol/L?
3.9 mmol/L.
Evidence and guidelines
Have a follow-up question?
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<p><a href="https://medelix.ai/en/calculators/glucose-mg-dl-to-mmol-l">Glucose mg/dL → mmol/L calculator by Medelix</a></p>For healthcare professionals and medical students. These tools support, and do not replace, clinical judgement. Always check results against the original source and your local protocols.