HbA1c ↔ Average Glucose Converter
Convert between HbA1c percentage and estimated average glucose (eAG) in mg/dL or mmol/L
HbA1c ↔ Average Glucose Converter
Convert between HbA1c percentage and estimated average glucose (eAG). This helps translate your 3-month average (A1C) into daily glucose numbers you can relate to.
Normal range: 4.0-5.6% | Prediabetes: 5.7-6.4% | Diabetes: ≥6.5%
Normal: 70-99 mg/dL | Prediabetes: 100-125 | Diabetes: ≥126
Understanding the Formula
eAG (mg/dL) = 28.7 × A1C - 46.7
eAG (mmol/L) = 1.59 × A1C - 2.59
Common Examples:
5.0% → 97 mg/dL
Normal
6.0% → 126 mg/dL
Prediabetes
7.0% → 154 mg/dL
Diabetes target
Clinical Note:
HbA1c reflects your average blood glucose over the past 2-3 months. It's the gold standard for diabetes monitoring. Target A1C for most people with diabetes is <7%, but your healthcare provider may set a different target based on your individual circumstances.
Reference Ranges
| Category | HbA1c (%) | eAG (mg/dL) | eAG (mmol/L) | Action |
|---|---|---|---|---|
| Normal | 4.0 - 5.6 | 68 - 114 | 3.8 - 6.3 | Maintain healthy lifestyle |
| Prediabetes | 5.7 - 6.4 | 117 - 137 | 6.5 - 7.6 | Intensive lifestyle changes |
| Diabetes | ≥ 6.5 | ≥ 140 | ≥ 7.8 | Medical management + lifestyle |
| Target (with diabetes) | < 7.0 | < 154 | < 8.6 | For most adults with diabetes |