Work out insulin to carb ratio instantly with clear inputs, formula shown and shareable results.
Uses the 500 rule (or 450 for regular insulin) to estimate how many grams of carbohydrate one unit of mealtime insulin covers.
Carbohydrate ratio
Grams per unit = constant / total daily dose; units for a meal = carbohydrate grams / ratio
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
It is an empirical constant derived from population data relating total daily dose to carbohydrate handling.
Not necessarily; many people need a tighter ratio at breakfast than later in the day.