    Conversion HbA1c (%) to HbA1c (mmol/mol) Conversion of HbA1c values from % to mmol/mol

HbA1c concentrations in the blood can be expressed in percentage (= NGSP unit) or mmol/mol (= IFCC unit). According to the consensus statement on the worldwide standardization of HbA1c measurement, HbA1c may be optimally indicated as mmol/mol. Another measure of long-term glycemic control is the estimated average glucose (eAG). Below you may find a calculator and a conversion table, including HbA1c according to NGSP and IFCC as well as eAG. For calculation of eAG in relation to HbA1c (%) we used the following formula resulting from linear regression analysis of continuous glucose monitoring observed over a period of 2 yr: eAG (mg/dl) = (28.7 x HbA1c) - 46.7, which was published by the ADAG Study Group in 2008. The calculatation rule applied for conversion of HbA1c (%) to HbA1c (mmol/mol) et vice versa is:

 % x10.93 - 23.5 = mmol/mol mmol/mol x0.0915 + 2.15 = %

Calculator

Conversion Table

Exact Conversion:

Insert HbA1c value in the left hand field and click button for conversion into the wanted unit
(JAVA script must be activated in your browser)

Insert value in mmol/mol:

HbA1c (%) HbA1c (mmol/mol) eAG (mg/dl)
5.0 31.15 96.80
5.5 36.62 111.15
6.0 42.08 125.50
6.5 47.55 139.85
7.0 53.01 154.20
7.5 58.48 168.55
8.0 63.94 182.90
8.5 69.41 197.25
9.0 74.87 211.60
9.5 80.34 225.95
10.0 85.80 240.30 