mmol/L ↔ mg/dL converter
Convert a blood-test result between mmol/L (used in the UK and most of the world) and mg/dL (common in the US) — for glucose, cholesterol, and triglycerides, plus HbA1c in % ↔ mmol/mol. Type in either box and the other updates instantly.
Your privacy: this converter runs entirely in your browser — nothing you type is sent anywhere. It's the same on-device principle Quanome is built on.
| Marker | Category | mmol/L | mg/dL |
|---|---|---|---|
| Fasting glucose | Normal | < 5.6 | < 100 |
| Prediabetes | 5.6–6.9 | 100–125 | |
| Diabetes | ≥ 7.0 | ≥ 126 | |
| Total cholesterol | Desirable | < 5.2 | < 200 |
| Borderline | 5.2–6.2 | 200–239 | |
| High | ≥ 6.2 | ≥ 240 | |
| LDL cholesterol | Optimal | < 2.6 | < 100 |
| High | ≥ 4.1 | ≥ 160 | |
| HDL cholesterol | Low | < 1.0 | < 40 |
| Protective | ≥ 1.6 | ≥ 60 | |
| Triglycerides | Normal | < 1.7 | < 150 |
| High | 2.3–5.6 | 200–499 | |
| Very high | ≥ 5.6 | ≥ 500 |
HbA1c (different units): normal < 39 mmol/mol (5.7%) · prediabetes 39–47 mmol/mol (5.7–6.4%) · diabetes ≥ 48 mmol/mol (6.5%).
## The conversion factors To convert **mmol/L → mg/dL**, multiply by the factor (divide to go back): - **Glucose:** × **18** (1 mmol/L = 18 mg/dL) - **Cholesterol** (total, LDL, HDL): × **38.67** - **Triglycerides:** × **88.57** - **HbA1c** uses a formula instead: mmol/mol = (% − 2.15) × 10.929 Each factor is just the marker's molar mass — that's why glucose, cholesterol, and triglycerides each convert differently. ## Want your results tracked over time — in both units, privately? Once you understand a number, the value is in the **trend**. [Quanome](/) pulls your labs, Apple Health, and even your DNA into one private timeline on your device — parsed locally, never uploaded — with an AI coach that reads your results in whichever units you use. Read the guides behind these numbers: [fasting glucose](/blog/what-your-fasting-glucose-means/), [HbA1c](/blog/what-your-hba1c-means/), [triglycerides](/blog/what-high-triglycerides-mean/), and [how to lower LDL cholesterol](/blog/how-to-lower-ldl-cholesterol/).Track your labs over time, privately
Quanome unifies your labs, Apple Health, and DNA into one private, on-device timeline — in your units, with an AI coach. Free on the App Store and Google Play.
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