Use this tool to calculate your insulin correction and meal-time bolus based on your current glucose levels and carbohydrate intake.
Correction Dose:
1 Units
Meal Dose bolus:
2 Units
Total Recommended Insulin Dose:
3 Units
Your total insulin dose is typically a combination of two parts: a correction dose to bring high blood sugar down to your target range and a meal dose to cover the carbohydrates you are about to eat.
Correction = (BG - Target) / ISF | Meal = Carbs / ICR
Correction = (BG - Target) / ISF
Meal = Carbs / ICR
Imagine your current blood glucose (BG) is 200 mg/dL, your Target is 100 mg/dL, and your Insulin Sensitivity Factor (ISF) is 50. For your meal, you plan to eat 60g of carbs with an Insulin-to-Carb Ratio (ICR) of 1:15.
Most rapid-acting insulins should be taken 15-20 minutes before eating (pre-bolusing). This allows the insulin to start working just as the glucose from your food enters your bloodstream.
If your blood sugar is below 70 mg/dL, follow the 15-15 rule: eat 15 grams of fast-acting carbs, wait 15 minutes, and re-check. Do not take meal insulin until your blood sugar is back in a safe range.
Important: This tool is for educational purposes only. You must consult your doctor or endocrinologist to determine your specific insulin sensitivity and carb ratios before making any medical decisions.
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