Health & Fitness
Carb Grams From Calories Calculator
Convert a carbohydrate calorie share into grams for meal planning.
The result is the daily amount of carbohydrate, in grams, that matches the share of daily calories entered.
Formula
Carb grams equal total calories multiplied by the carb percentage, divided by 4 kcal per gram.
How it works
The carb share of calories is isolated first, then divided by 4, the energy in one gram of carbohydrate. The remainder of calories goes to protein and fat.
Worked example
For example, with 2000 daily calories and a 50% carbohydrate share, 2000 × 50 ÷ 100 = 1000 calories from carbohydrate, and 1000 ÷ 4 = 250 grams of carbohydrate per day.
FAQs
Why 4 kcal per gram?
That is the standard energy value used for carbohydrate.
What about fibre?
Fibre is counted inside carbohydrate here, as in most simple calculators.
Is 50% right for me?
It is a common middle value; active people often go higher.
General information only, not medical advice.
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