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Health Calculators

Insulin Dosage Calculator

Estimate mealtime insulin dose from carbohydrate content, blood glucose, total daily insulin dose, carbohydrate ratio, and insulin sensitivity factor.

Enter the carbohydrate content of your meal, your current and target blood glucose, and either your total daily insulin dose or your carbohydrate ratio and insulin sensitivity factor.

Step 1 computes the insulin dose needed to cover the carbohydrates. Step 2 computes the correction dose for high blood glucose.

The total mealtime insulin dose is the sum of the carbohydrate coverage dose and the correction dose.

Carbohydrate content

How many grams of carbohydrates were in your meal?

g
Carbohydrate ratio

How many grams of carbohydrates are covered by one unit of insulin (often 10–15 g).

g/unit
Insulin dose to cover carbohydrates
units
Current blood glucose
mg/dL
Target blood glucose
mg/dL
Insulin sensitivity factor

One unit of insulin decreases blood glucose by this amount.

mg/dL
Insulin dose to correct blood glucose
units

Total mealtime insulin dose

Total insulin dose
units

Always double-check the calculations, the dosing information, and contraindications on the leaflet. Consult your health provider before administering any medication.