Carb Calculator

Estimate daily carbohydrate intake based on calories, body size, activity level, and fitness goal. This free carb calculator supports men and women, US and metric units, and shows several practical carbohydrate target methods in one place.

Calculate Daily Carbs

Using height in feet and inches, weight in pounds, and optional body fat percentage.
Using height in centimeters, weight in kilograms, and optional body fat percentage.
Your result will appear here.

How carb needs are estimated

Calories first:
This calculator estimates maintenance calories from BMR and activity level.

Goal adjustment:
Calories are adjusted depending on fat loss, maintenance, muscle gain, or performance goals.

Carb style:
Lower, moderate, and higher carb styles shift what percentage of calories come from carbohydrates.

Grams per day:
The carb calorie target is converted into grams using 4 calories per gram.

Why carbs matter

Carbohydrates help fuel training, movement, and many daily activities. Many people track carbs for sports performance, energy levels, fat loss planning, and meal structure.

Total calories and overall diet quality still matter, but carb intake can strongly affect training energy and food choices.

What your result means

Your result shows an estimated daily carb target in grams, a practical carb range, and carbs per meal based on your selected meal frequency.

This gives you a simple daily carb target that can be used for meal planning and food tracking.

Carb calculator tips

Frequently asked questions

How many carbs do I need per day?

That depends on your calorie intake, activity level, and goal. Performance-focused plans often use more carbs than fat-loss plans.

Are carbs bad for fat loss?

No. Fat loss usually depends more on total calorie intake than carbs alone, though some people prefer lower-carb approaches.

Should athletes eat more carbs?

Often yes. Higher training volume and higher output commonly increase carbohydrate needs.

Should I calculate carbs from body weight or calories?

Many practical carb plans are set from total daily calories, but body size and activity level still help guide the final target.