What's a good A1C?
- Filed under
- Prediabetes & A1C
- Reading time
- 1 min
A1C estimates your average glucose over two to three months. The ranges below explain what counts as typical, and how an estimate from your own readings compares.
In short: Below 5.7% is typical; 5.7–6.4% is prediabetes; 6.5%+ is the diabetes range.
A1C measures the share of your hemoglobin with glucose attached, which reflects your average glucose over roughly three months. The common reference points are below 5.7% (typical), 5.7–6.4% (prediabetes), and 6.5% or above (the diabetes range). People managing diabetes often work toward an individualized target with their clinician.
Between lab draws, you can estimate an A1C-style number from your own average glucose. SteadyRange shows this as an estimated A1C. It uses a published formula and usually lands within a few tenths of a lab result; a gap between the two is normal because they measure related but slightly different things.
An estimate is a guide for spotting trends, not a replacement for a blood test. Your clinician uses a lab A1C alongside the rest of your picture to set targets.