How we worked it out
Updated as you change the numbers.
- Grams = calories × share ÷ calories per gram (4 for protein and carbs, 9 for fat).
Method and assumptions
The calculator splits your calories by percentage and converts to grams using 4 kcal/g for protein and carbohydrate and 9 kcal/g for fat. The Acceptable Macronutrient Distribution Ranges for adults are 10–35% protein, 45–65% carbohydrate and 20–35% fat.
Questions
How many grams of protein are in a 2,200-calorie, 20% protein diet?
110 g: 2,200 × 0.20 ÷ 4.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.