HbA1c to Average Blood Sugar Converter
The formula
An HbA1c of 7.0% corresponds to an estimated average glucose of 154 mg/dL (8.5 mmol/L).
Diabetes range · 6.5% or higher
This is the range used to diagnose diabetes, confirmed by your doctor with repeat or additional tests. If you are already being treated, discuss your personal target with your doctor.
HbA1c to average glucose chart
| HbA1c | Average glucose (mg/dL) | Average glucose (mmol/L) |
|---|---|---|
| 5.0% | 97 | 5.4 |
| 5.5% | 111 | 6.2 |
| 5.7% | 117 | 6.5 |
| 6.0% | 126 | 7.0 |
| 6.5% | 140 | 7.7 |
| 7.0% | 154 | 8.5 |
| 7.5% | 169 | 9.3 |
| 8.0% | 183 | 10.1 |
| 8.5% | 197 | 10.9 |
| 9.0% | 212 | 11.7 |
| 10.0% | 240 | 13.3 |
| 11.0% | 269 | 14.9 |
| 12.0% | 298 | 16.5 |
HbA1c ranges
- Normal range (Below 5.7%): This is within the range labs usually report as normal.
- Prediabetes range (5.7% – 6.4%): Doctors call this range prediabetes. It is a useful early signal — talk to your doctor about next steps and lifestyle changes.
- Diabetes range (6.5% or higher): This is the range used to diagnose diabetes, confirmed by your doctor with repeat or additional tests. If you are already being treated, discuss your personal target with your doctor.
Frequently asked questions
What is HbA1c?
HbA1c (glycated haemoglobin) is a blood test that reflects your average blood sugar over roughly the past two to three months, reported as a percentage.
How do you convert HbA1c to average blood sugar?
The standard ADAG formula is: estimated average glucose (mg/dL) = 28.7 × HbA1c − 46.7. For example, an HbA1c of 7% corresponds to about 154 mg/dL.
What HbA1c is normal?
Labs usually report below 5.7% as normal, 5.7–6.4% as the prediabetes range and 6.5% or higher as the diabetes range. Your doctor confirms any diagnosis and sets your personal target.
Why doesn't my glucose meter average match the estimate?
The estimate is an average across many people, and meter readings depend on when you test. Anaemia and some other conditions can also affect HbA1c. Discuss any mismatch with your doctor.
Read more
- Understanding Your Blood-Sugar Numbers: A Simple GuideFasting, post-meal and HbA1c can feel confusing. This plain-language guide explains what the common blood-sugar numbers mean, with your doctor confirming your own.
- Prediabetes: Early-Stage Madhumeha and What You Can DoBorderline blood sugar is an early signal, not a verdict. Learn how Ayurveda views this stage and the calm, doctor-guided lifestyle habits that support you now.
- Reading Your Body's Signals: Early Signs of Blood-Sugar Imbalance & When to ConsultLearn the common signs the body may show when blood sugar is out of balance, and when it is wise to consult a doctor. Clear, calm, non-alarming guidance.
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Medical disclaimer: This tool is for general education and screening only. It does not diagnose any condition and is not a substitute for medical advice, diagnosis or treatment. Always consult a qualified doctor about your results, and never start, stop or change any medication on the basis of this tool.