🧮 Diabetes Calculator

🧮 Diabetes Calculator

HbA1c estimator and insulin bolus calculator

Important: This tool provides estimates only. It does not replace a lab HbA1c or advice from a healthcare professional. Always confirm with your provider before adjusting treatment.

Choose device

Pick your monitor or pump (same list as /compare/).

Selected device: None selected

HbA1c Estimator

HbA1c ranges (DCCT %)

Your result is placed in one of the bands from estimated HbA1c (Nathan ADAG from average glucose). The ranges follow a common clinical layout.

HbA1c (DCCT %) Meaning
below 4.0% Hypoglycemia risk
4.0% to 5.7% Non-diabetic range
5.7% to 6.5% Prediabetes range
6.5% to 7.0% Diabetes target reached
7.0% to 8.0% Above target
8.0% to 9.0% Talk with your provider
9.0% and over Talk with your provider soon

Exact thresholds in code: below 4.0% (hypo), 4.0% to below 5.7% (non-diabetic), 5.7% to below 6.5% (prediabetes), 6.5% through 7.0% inclusive (diabetes target reached), above 7.0% to below 8.0% (above target), 8.0% to below 9.0% (talk with your provider), 9.0% and over (talk with your provider soon). An extra warning also appears when mean glucose is below 70 mg/dL (3.9 mmol/L).

Typically 90 days (HbA1c reflects roughly 3 months).