A1c Calculator – Hemoglobin A1c to Average Blood Sugar

The calculator uses the formula:
EAG (mg/dL) = (28.7 × A1c) – 46.7
or
EAG (mmol/L) = (1.59 × A1c) – 2.59
You input your A1c percentage and select the unit (mg/dL or mmol/L), and the calculator provides the estimated average glucose level.

Knowing your EAG helps you understand how well your blood sugar is controlled over time. It provides a clearer picture of your diabetes management and helps you and your healthcare provider make adjustments to your treatment plan if needed.

A1c measures the average blood glucose levels over the past 2–3 months, while blood glucose levels (measured by a glucometer) provide a snapshot of your current blood sugar. Both metrics are important for managing diabetes effectively.

An A1c Calculator provides a close estimate based on the formula used. However, individual factors like hemoglobin variants or medical conditions can affect accuracy. For precise measurements, consult a healthcare provider.

Yes, an A1c Calculator is a valuable tool for diabetes management. It helps you track your long-term blood sugar control and assess the effectiveness of your treatment plan, diet, and lifestyle changes.

To convert A1c to average blood sugar manually, use the formula:
EAG (mg/dL) = (28.7 × A1c) – 46.7
or
EAG (mmol/L) = (1.59 × A1c) – 2.59
For example, an A1c of 7% corresponds to an EAG of approximately 154 mg/dL or 8.6 mmol/L.

A good A1c level for most people with diabetes is below 7% (53 mmol/mol). However, individual targets may vary based on age, health conditions, and treatment goals. Consult your healthcare provider for personalized recommendations.

Yes, an A1c Calculator can help individuals with prediabetes understand their estimated average glucose levels. An A1c level between 5.7% and 6.4% indicates prediabetes, and monitoring it can help prevent the progression to diabetes.

Factors like blood sugar control, hemoglobin variants, anemia, and certain medical conditions can affect A1c levels. Regular monitoring and consultation with a healthcare provider ensure accurate interpretation of results.

A balanced diet low in refined sugars and high in fiber can help lower A1c levels by improving blood sugar control. An A1c Calculator helps you track the impact of dietary changes on your long-term glucose levels.

Yes, an A1c Calculator is useful for both Type 1 and Type 2 diabetes. It helps individuals with either type understand their long-term blood sugar control and make informed decisions about their treatment plans.

Most people with diabetes should check their A1c levels every 3–6 months, depending on their treatment plan and blood sugar control. Regular monitoring helps ensure your diabetes management is on track.