Warsaw Method Calculator

The Warsaw Method relies on converting grams of dietary fat and protein into caloric values and subsequently into Fat Protein Units (FPUs). First, fat calories are calculated as fat_kcal = fat * 9, and protein calories as protein_kcal = protein * 4. The sum of these yields the total caloric load from these macronutrients: total_calories = fat_kcal + protein_kcal. Next, the carb equivalent is derived by dividing total calories by 10 (charb_equivalent = total_calories / 10). The FPU value is found by dividing total calories by 100 (fpu = total_calories / 100), where 1 FPU roughly equals 100 calories of fat and protein. Finally, the required insulin dose is calculated by dividing the carb equivalent by the user's Insulin-to-Carbohydrate ratio (insulin = charb_equivalent / ICratio), and extended delivery durations are assigned based on the FPU value.

Consider a meal containing 15 grams of fat and 25 grams of protein, with an Insulin-to-Carbohydrate ratio (ICratio) of 10. First, calculate the calories from fat: 15g * 9 = 135 kcal. Next, calculate the calories from protein: 25g * 4 = 100 kcal. Sum these values for total calories: 135 + 100 = 235 kcal. To find the carbohydrate equivalent, divide by 10: 235 / 10 = 23.5g of carb equivalents. To determine the FPU, divide total calories by 100: 235 / 100 = 2.35 FPUs. Finally, compute the insulin dose by dividing the carb equivalent by the ICratio: 23.5 / 10 = 2.35 units of insulin, which would be delivered via an extended bolus over several hours.

Always consult your endocrinologist or certified diabetes educator before adjusting your insulin delivery profiles or implementing new meal-math formulas. Because fat and protein digestion rates vary significantly based on fiber content and individual metabolism, monitor your blood glucose levels closely at 3, 4, and 5 hours post-meal to fine-tune your extended bolus timing and duration settings.