Hemoglobin A1c Calculator
Quickly estimate your average blood glucose from HbA1c levels with our free online calculator, aiding diabetes management and clinical assessment.

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About This Tool
This Hemoglobin A1c calculator helps users convert HbA1c percentages into estimated average blood glucose (eAG) levels. It is essential for diabetologists, researchers, and patients wanting to understand their blood sugar control more interpretably.
The tool accepts an HbA1c value, validates the input, and calculates the eAG using the standard formula: eAG (mg/dL) = (28.7 x HbA1c) - 46.7. Users can toggle between mg/dL and mmol/L units for the result, with the mmol/L conversion applying a factor of 0.0555.
Designed for ease of use, the interface includes a simple input box, a units toggle, and a prominent 'Calculate' button. Results are displayed clearly below, with options to copy or switch units quickly. This tool is suitable for clinicians, medical students, and patients aiming for transparent glucose interpretation based on their HbA1c readings.
It supports quick assessments during consultations, research, or personal health tracking, contributing to better understanding and management of diabetes.
How to Use
1. Enter your HbA1c percentage in the input box.
2. Select the preferred units for the estimated glucose (mg/dL or mmol/L).
3. Click the 'Calculate' button to view the estimated average glucose level.
4. Use the copy button to save results or switch units as needed.

FAQs/Additional Resources
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What is HbA1c and how does this calculator help?
How accurate is the estimated glucose provided?
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Is my data saved or stored?
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