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Know your
A1C.

Enter a blood glucose reading. Your estimated A1C — calculated instantly, no account required.

Calculate your estimated A1C

One reading gives you a snapshot. More readings give you a trend.

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A1C reference ranges

Under 5.7

Normal range

5.7 – 6.4

Prediabetes

6.5 and up

Diabetes range

General reference only — not a medical diagnosis.