Carbohydrate Calculator

Carbohydrate is the body's preferred fuel for hard efforts — glycogen powers everything from sprints to heavy sets. Dietary guidelines put 45–65% of calories from carbs; endurance athletes sit at the top of that range, low-carb eaters well below it, and both can be healthy.

At any total, whole sources (grains, fruit, legumes, vegetables) bring fiber — about 14 g per 1,000 kcal is the guideline — and steadier glucose than refined sources. The gram target matters less than what supplies it.