Table 6.1

Estimated average glucose (eAG)

A1C (%)mg/dL*mmol/L
597 (76–120)5.4 (4.2–6.7)
6126 (100–152)7.0 (5.5–8.5)
7154 (123–185)8.6 (6.8–10.3)
8183 (147–217)10.2 (8.1–12.1)
9212 (170–249)11.8 (9.4–13.9)
10240 (193–282)13.4 (10.7–15.7)
11269 (217–314)14.9 (12.0–17.5)
12298 (240–347)16.5 (13.3–19.3)
  • Data in parentheses are 95% CI. A calculator for converting A1C results into eAG, in either mg/dL or mmol/L, is available at professional.diabetes.org/eAG.

  • * These estimates are based on ADAG data of ∼2,700 glucose measurements over 3 months per A1C measurement in 507 adults with type 1, type 2, or no diabetes. The correlation between A1C and average glucose was 0.92 (6,7). Adapted from Nathan et al. (6).