How it works
Average glucose uses the ADAG formula: 28.7 × HbA1c − 46.7. One mmol/L equals 18 mg/dL.
Please note
This tool gives a general estimate for information only. It is not medical advice — talk to a doctor or pharmacist about your own situation.
Frequently asked questions
What is a normal fasting blood sugar?
Generally 70–99 mg/dL (3.9–5.5 mmol/L).