Canada measures blood sugar in mmol/L, while the United States uses mg/dL. This free converter switches instantly between the two so you can read any glucose reading, lab report, or US-based guide in the units you understand.
For reference only — not medical advice. Conversion factor: 1 mmol/L = 18.0182 mg/dL. Always confirm targets with your healthcare team.
Blood Sugar Reference Ranges (Canada)
Diabetes Canada uses the following general targets for many non-pregnant adults. Your own targets may differ — always confirm with your doctor.
| When measured | Target (mmol/L) | Equivalent (mg/dL) |
|---|---|---|
| Fasting / before meals | 4.0 – 7.0 | 72 – 126 |
| 2 hours after a meal | 5.0 – 10.0 | 90 – 180 |
| Normal fasting (no diabetes) | 4.0 – 5.5 | 72 – 99 |
How the Conversion Works
The two units measure the same thing differently. To convert, multiply or divide by 18.0182:
- mmol/L → mg/dL: multiply by 18 (e.g. 5.5 × 18 ≈ 99 mg/dL)
- mg/dL → mmol/L: divide by 18 (e.g. 126 ÷ 18 ≈ 7.0 mmol/L)
For background on testing and what the numbers mean, see our guides on the blood glucose test and alcohol and diabetes.
Frequently Asked Questions
Why does Canada use mmol/L instead of mg/dL? Canada, the UK, and most of the world use the international SI unit mmol/L. The US and a few other countries use mg/dL. Both describe the same blood sugar level.
Is 5.5 mmol/L normal? For someone without diabetes, a fasting blood sugar of 5.5 mmol/L (about 99 mg/dL) is within the normal range. Levels are interpreted alongside your overall health and other tests.
What is the conversion factor for blood sugar? 1 mmol/L of glucose equals 18.0182 mg/dL. Multiply mmol/L by 18 to get mg/dL, or divide mg/dL by 18 to get mmol/L.