Diabetes & Blood Sugar calculators

A1C, insulin resistance and glucose tools.

Convert HbA1c to estimated average glucose.

Estimate HbA1c from average glucose readings.

Convert mg/dL and mmol/L and check fasting levels.

Insulin resistance estimated from fasting glucose and insulin.

Insulin sensitivity index from fasting labs.

Educational estimate of meal and correction insulin.

Typical basal and bolus split, for education.

How much a food portion raises blood sugar.

ADA-style risk points from lifestyle and history.

CGM time in range and glucose management indicator.

Related guides

A1C shows average blood sugar over about three months.

Lifestyle changes can cut the risk of progressing to type 2 diabetes by more than half.

Normal, prediabetes and diabetes ranges in mg/dL and mmol/L.