Table 9

Correlation of A1C with average glucose

A1C (%)Mean plasma glucose
mg/dlmmol/l
61267.0
71548.6
818310.2
921211.8
1024013.4
1126914.9
1229816.5
  • 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 (49). A calculator for converting A1C results into estimated average glucose (eAG), in either mg/dl or mmol/l, is available at http://professional.diabetes.org/eAG.