Carbohydrate Intake Calculator
Free carbohydrate intake calculator: turn daily calories and a goal into grams of carbs per day, with the 45-65% guideline range shown alongside.
About the Carbohydrate Intake Calculator
Carbohydrates supply 4 kcal per gram, so daily carb grams = (calories × carb share %) ÷ 100 ÷ 4. This free carbohydrate intake calculator turns your daily calorie target and goal — low-carb, weight loss, balanced or endurance training — into a concrete grams-per-day figure, alongside the general dietary guideline range of 45-65% of calories.
On a 2,200 kcal diet, a balanced 50% share means 275 g of carbs, while a low-carb 25% plan allows about 138 g. Dieters, diabetics planning meals with their doctor, and athletes carb-loading before events all need this number. Roti, rice, dal and fruit — staples across Pakistan and India — are largely carbohydrate, so knowing your daily budget makes portion planning practical. Needs vary by individual; treat results as a starting point.
How to Use the Carbohydrate Intake Calculator
- 1Enter your daily calorie target or maintenance calories.
- 2Pick a goal — or choose custom and set your own carb percentage.
- 3Read carb grams per day, the calorie share and the 45-65% guideline range.
Frequently Asked Questions
How many carbs should I eat on 2,000 calories a day?
At the balanced 50% share: 2,000 × 0.50 = 1,000 kcal from carbs, ÷ 4 = 250 g per day. The general guideline range of 45-65% corresponds to 225-325 g on the same calories.
How many grams of carbs is low-carb?
Definitions vary, but under 26% of calories (or under ~130 g/day) is commonly called low-carb, and under 50 g/day is ketogenic territory. On a 1,800 kcal diet the calculator's 25% low-carb preset gives 112 g per day.
Why do carbs have 4 calories per gram?
That is the Atwater factor for carbohydrate metabolism — protein is also 4 kcal/g while fat is 9 kcal/g. It is why cutting fat grams reduces calories faster than cutting the same grams of carbs, and why the calculator divides carb calories by 4.
Do athletes really need 60% or more carbs?
Endurance athletes often target 6-10 g per kg of body weight — a 70 kg runner may need 420-700 g on heavy training days, which can exceed 60% of a 3,000+ kcal intake. For casual gym-goers, the standard 45-65% range is usually plenty.