HbA1c Converter

Convert HbA1c values between the newer mmol/mol units used in the UK and the older percentage (%) units. HbA1c shows your average blood sugar levels over the past 2-3 months.

Enter your HbA1c value

HbA1c value in mmol/mol

mmol/mol

Reference ranges:

Normal: below 42 mmol/mol (6.0%)
Prediabetes: 42-47 mmol/mol (6.0-6.4%)
Diabetes: 48 mmol/mol (6.5%) or above

Disclaimer: This calculator is for informational purposes only and should not replace professional medical advice. Patient.info does not store any of your personal or medical data in association with your answers. All answers are completely anonymous. Always consult a healthcare provider for personalised health guidance.