Table 6.1

Mean glucose levels for specified A1C levels (21,25)

A1C (%)Mean plasma glucose*Mean fasting glucoseMean premeal glucoseMean postmeal glucoseMean bedtime glucose
mg/dLmmol/Lmg/dLmg/dLmg/dLmg/dL
61267.0
<6.5122118144136
6.5–6.99142139164153
71548.6
7.0–7.49152152176177
7.5–7.99167155189175
818310.2
8–8.5178179206222
921211.8
1024013.4
1126914.9
1229816.5
  • A calculator for converting A1C results into eAG, in either mg/dL or mmol/L, is available at http://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, and no diabetes. The correlation between A1C and average glucose was 0.92 (25).