FPU Calculator

Time factors

1 FPU
100 kcal - over 3 hours
2 FPU
200 kcal - over 4 hours
3 FPU
300 kcal - over 5 hours
4 FPU and more
400 kcal and more - over 7 to 8 hours

Calculation

Step 1 for carbohydrates
carbohydrates * 4
Step 2 for FPU
kcal - carbohydrates / 100
Step 3 for insulin
the same calculation from step 2 * factor