HbA1c: convert % to mmol/mol
mmol/mol = % × 10.93 − 23.52
Calculator
Enter a value in any unit and all other units fill in.
Conversion formulas
| % → mmol/mol | mmol/mol = % × 10.93 − 23.52 |
|---|---|
| mmol/mol → % | % = mmol/mol × 0.09148 + 2.152 |
Conversion table
Highlighted: values inside the adult reference range.
| % | mmol/mol |
|---|---|
| 1 | -12.59 |
| 2 | -1.662 |
| 3 | 9.27 |
| 4 | 20.2 |
| 5 | 31.13 |
| 6 | 42.06 |
| 7 | 53 |
| 8 | 63.93 |
| 9 | 74.86 |
| 10 | 85.79 |
| 11 | 96.72 |
| 12 | 107.7 |
| 13 | 118.6 |
| 14 | 129.5 |
Reference range
4 – 5.6 % = 20.2 – 37.69 mmol/mol
Source: NIDDK (NIH): Diagnostic tests for diabetes and prediabetes · Last reviewed: 2026-10-14