Jon, letter from the clinic
Your result 42, This number is mmol
With your result 42, this number is mmol, the calculator shows a planning figure. Illustration only, not advice.
HbA1c Converter
Switch HbA1c between mmol/mol and percent. No diagnosis.
Your details
Fill the boxes, then calculate.
What is this calculator?
Switch HbA1c between mmol/mol and percent. No diagnosis.
How it works
- Enter the figures you know.
- We apply a published or common planning method.
- Read the limitations under the result.
Common questions
What is the hba1c converter?
Convert mmol/mol and percentage HbA1c. Units only. Use it as a guide, not a diagnosis.
Does this replace my GP?
No. Calculators stay in the browser and cannot see you.
Can I share the number?
Share fitness and fun results if you like. Keep lab and alcohol impairment numbers private.
Example scenarios
Liam, units on the printout
Your result 51.2, This number is mmol
With your result 51.2, this number is mmol, the calculator shows a planning figure. Illustration only, not advice.
Neil, before the GP call
Your result 32.8, This number is mmol
With your result 32.8, this number is mmol, the calculator shows a planning figure. Illustration only, not advice.
Understanding your results
Treat this as a snapshot for hba1c converter, not a verdict. If the number worries you, take it to your GP rather than stacking new rules on yourself.
About this result
Guidance only. Calculations run in your browser. Numbers are estimates, not a diagnosis.
How we calculate
Common IFCC / NGSP conversion.
Sources
Method described on this page. We link NHS or GOV.UK guidance where it applies.
Limitations
- Illustration only.
- Not personal medical advice.
When to seek help
Speak to a GP or call NHS 111 if you are worried. Call 999 in an emergency.
Spotted an error? Request a correction or read our editorial policy.