1. What is HbA1c to mmol/L Conversion?

This calculator converts HbA1c values from mmol/mol (IFCC units) to estimated average glucose in mmol/L using a fractional conversion method. This helps translate long-term glucose control measurements to more familiar daily glucose units.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( mmol/mol \) — HbA1c value in IFCC units
• \( mmol/L \) — Estimated average glucose concentration

Explanation: This fractional method provides a more accurate conversion between HbA1c and average glucose levels compared to simpler linear conversions.

3. Importance of HbA1c Conversion

Details: Converting HbA1c to mmol/L helps patients and healthcare providers better understand the relationship between long-term glucose control (HbA1c) and daily glucose measurements.

4. Using the Calculator

Tips: Enter HbA1c value in mmol/mol (IFCC units). The calculator will provide the estimated average glucose in mmol/L.

5. Frequently Asked Questions (FAQ)

Q1: Why convert HbA1c to mmol/L?
A: It helps patients understand their HbA1c results in terms of daily glucose measurements they're more familiar with.

Q2: How accurate is this conversion?
A: The fractional method provides good correlation, but individual variations in glycation rates mean it's an estimate.

Q3: What's the difference between mmol/mol and % units?
A: mmol/mol (IFCC) is the newer international standard, while % (NGSP) is the older unit (1% ≈ 10.93 mmol/mol).

Q4: Can I use this for diabetes diagnosis?
A: No, diagnosis should be based on HbA1c values directly, not converted glucose estimates.

Q5: Why does my meter average differ from this estimate?
A: Meter averages only reflect tested times, while HbA1c reflects 24/7 glucose over 2-3 months.