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GlucoCalc
Convert A1C percentage to the average blood sugar it represents.
A1C (glycated hemoglobin) reflects your average blood sugar over the past 2-3 months. Glucose attaches to hemoglobin in red blood cells; the higher your blood sugar, the more hemoglobin gets glycated. Normal is below 5.7%, prediabetes is 5.7-6.4%, and diabetes is 6.5% or higher.
The ADAG study established eAG (mg/dL) = 28.7 × A1C − 46.7. For example, an A1C of 7% translates to an average glucose of ~154 mg/dL. This lets patients relate their lab A1C to the daily numbers they see on their glucose meter.
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OpenEstimated average glucose
117 mg/dL
6.5 mmol/L
What you entered
Estimated average glucose (eAG)
28.7 × 5.7 − 46.7= 117 mg/dLConvert to mmol/L
117 ÷ 18= 6.5 mmol/LA1C category
5.7% → 5.7–6.4%= PrediabetesResult
eAG: 117 mg/dL
An A1C of 5.7% corresponds to an estimated average glucose of 117 mg/dL (6.5 mmol/L). This falls in the "Prediabetes" range.