Insulin-to-Carb Ratio Calculator
Calculate insulin doses for meals and corrections based on your carb intake, blood sugar levels, insulin-to-carb ratio, and correction factor.
Step 1: Insulin Settings
Understanding Insulin Ratios
Your insulin-to-carb ratio determines how many grams of carbohydrates one unit of insulin will cover. A 1:10 ratio means 1 unit covers 10g carbs. Work with your healthcare provider to determine your correct ratios.
Step 2: Meal & Blood Sugar
Important Note
This calculator is for educational purposes only. Always consult with your healthcare provider before making changes to your insulin regimen. Individual needs may vary based on activity, stress, illness, and other factors.
Insulin Dose Calculation Results
Total Insulin Dose
Insulin-to-Carb Ratio Comparison
| Ratio | Carbs per Unit | Insulin for 60g Carbs | Typical Use |
|---|
Dose Calculation Formula
Total Insulin = (Carbs ÷ Ratio) + ((Current BG – Target BG) ÷ Correction Factor)
First calculate insulin for carbs: Divide carb grams by your insulin-to-carb ratio. Then calculate correction insulin: Subtract target BG from current BG, then divide by your correction factor. Add both for total dose.
Common Food Carb Counts
| Food Item | Serving Size | Carbohydrates (g) |
|---|---|---|
| White Bread | 1 slice | 15g |
| Pasta (cooked) | 1 cup | 45g |
| Apple (medium) | 1 fruit | 25g |
| Banana (medium) | 1 fruit | 27g |
| Potato (medium) | 1 potato | 37g |
| Rice (cooked) | 1 cup | 45g |
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