How to Calculate Carbohydrate

What is Carbohydrate?

A carbohydrate calculator estimates daily carb intake targets based on calorie goals, activity level, and dietary preferences. It is used by athletes, diabetics, and anyone managing their macronutrient balance.

Formula

Carb calories = Total calories × carb % · Carb grams = Carb calories ÷ 4

Step-by-Step Guide

1Determine total daily calorie target (TDEE or prescribed calories)
2Set carbohydrate percentage (typically 45–65% for general health; 30–40% for low-carb)
3Divide carb calories by 4 (each gram of carbohydrate = 4 kcal)

Worked Examples

Input

2,000 kcal diet · 50% carbohydrate target

Result

1,000 kcal from carbs ÷ 4 = 250 g carbohydrates/day

1 slice bread ≈ 15 g carbs; 1 cup cooked rice ≈ 45 g carbs

Common Mistakes to Avoid

✕Counting total carbs instead of net carbs for keto diets (net = total − fibre)
✕Using same carb target for rest days and training days

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