The blood sugar converter converts blood glucose readings between mg/dL — used in the United States and many other countries — and mmol/L — used in the United Kingdom, Canada, Australia, and Europe. The conversion factor is 18.016: multiply mmol/L by 18.016 to get mg/dL, or divide mg/dL by 18.016 to get mmol/L. This converter is used by nurses, diabetic patients travelling internationally, and clinicians interpreting foreign medical records.
| Condition | mg/dL | mmol/L |
|---|---|---|
| Severe hypoglycaemia | <40 | <2.2 |
| Hypoglycaemia | 40–69 | 2.2–3.8 |
| Normal fasting | 70–99 | 3.9–5.5 |
| Pre-diabetes (fasting) | 100–125 | 5.6–6.9 |
| Diabetes (fasting) | ≥126 | ≥7.0 |
| Normal postprandial (2hr) | <140 | <7.8 |
| Pre-diabetes (2hr) | 140–199 | 7.8–11.0 |
| Diabetes (2hr) | ≥200 | ≥11.1 |
| Hyperglycaemic crisis | ≥600 | ≥33.3 |
7 mmol/L equals 126 mg/dL. This is the diagnostic threshold for diabetes mellitus on a fasting blood glucose test according to WHO and ADA guidelines. To convert mmol/L to mg/dL, multiply by 18.016.
Normal fasting blood glucose is 70–99 mg/dL (3.9–5.5 mmol/L). Pre-diabetes is 100–125 mg/dL (5.6–6.9 mmol/L). A fasting level of 126 mg/dL (7.0 mmol/L) or above on two separate tests confirms diabetes.