HbA1c unit converter tool for type 1 diabetes

The NPS HbA1c unit converter helps people with diabetes keep track of the changes in the way HbA1c results are reported.

The HbA1c test measures your average blood glucose level over the previous 3 months, and gives a reliable estimate of how well your diabetes is being managed.

Note: this is not a diagnostic tool. Values displayed by this unit converter are not intended for diagnosis. Diagnosis of diabetes should only be made with the aid of a health professional.

HbA1c test reports are changing

The way your HbA1c result appears on blood test reports is changing.

Before July 2011, your HbA1c result was reported as a percentage (for example 7%). Until July 2013, you will also see your result reported as another unit called millimoles per mole (mmol/mol). This is simply a different way of reporting the same HbA1c result.

For example, a result of 7% will also appear as 53.0 mmol/mol.

After July 2013 your HbA1c result will only be reported as ‘mmol/mol’.

This change has been made so that HbA1c results are reported in the same way in all countries.

Use the NPS HbA1c converter

The NPS unit converter will help you convert your HbA1c result from a percentage into the new mmol/mol unit, and vice versa.

Enter your result. There is no need to enter the units (i.e. the % sign or mmol/mol).

The converter will automatically calculate your result.

The HbA1c test

Everyone with diagnosed diabetes (type 1 or type 2) needs to have a regular blood test to monitor how well their blood glucose is controlled — the HbA1c test (also known as glycated haemoglobin).

Your HbA1c blood test result shows what your average blood glucose level has been over the past 3 months, and whether your diet, other lifestyle changes and diabetes medicines are controlling your diabetes effectively or if your treatment needs to be changed.

How will this change affect me?

The new way of reporting the units will not mean any changes to the way you are tested, your HbA1c target, or how often you need to be tested.

If you are used to keeping track of your HbA1c results as a percentage, you’ll need to get used to the new units.

The new way of reporting HbA1c test results does not affect blood glucose self monitoring using the finger prick test. The finger prick test is not the same as the HbA1c test. There is no change to the way your blood glucose monitor reports your blood glucose levels. Continue to use the finger prick test as you usually do and as often as your health professional or diabetes educator recommends.

What is my target HbA1c?

For most people, the recommended level of HbA1c is 7% or less (or 53.0 mmol/mol or less). If your HbA1c level is higher than 7%, or more than 53.0 mmol/mol, it means that your blood glucose level has been too high on average in the past 3 months.

Talk to your health professional about your HbA1c target, how often you should have the test, and what you can do to reach your target.