Carbohydrate Calculator

Calculate your daily carbohydrate needs based on activity level, goals, and caloric intake.

Result

Fill in the fields above, then press Calculate.

A carbohydrate calculator determines your optimal daily carb intake in grams based on your calorie target and diet goal, supporting everything from keto to high-performance athletic diets.

Enter your daily calorie target and select a diet goal. For a custom percentage, choose "Maintain" and set your preferred carb percentage. The calculator shows your daily carb needs in grams and meal distribution.

Examples

2000 calorie diet at 50% carbs

Carb calories: 2000 x 0.50 = 1000 kcal. Carb grams: 1000 / 4 = 250g of carbohydrates per day.

Frequently Asked Questions

How many carbs should I eat per day?
The Dietary Guidelines recommend 45-65% of calories from carbs for most adults. For a 2000-calorie diet, that is 225-325g. Athletes may need more, while those on low-carb diets intentionally reduce to 50-150g.
What is the difference between simple and complex carbs?
Simple carbs (sugar, white bread) are digested quickly and spike blood sugar. Complex carbs (whole grains, vegetables, legumes) are digested slowly, provide sustained energy, and are generally healthier choices.
Related Calculators
Macronutrient Calculator
Protein Calculator
Calorie Calculator
TDEE Calculator

Quick Tips

  • •Prioritize complex carbs (whole grains, legumes, vegetables) over simple sugars for sustained energy.
  • •Time your carb intake around workouts — consume more carbs before and after exercise for better performance and recovery.
  • •If switching to a low-carb or keto diet, reduce carbs gradually over 1-2 weeks to minimize side effects.