Do macro ratios matter more than calories?
Calories determine weight change; macros affect body composition and performance. Both matter.
Health Fitness
Macronutrient Ratio Calculator
Compute how many grams of carbs, protein, and fat you should consume daily.
Balance Your Diet
Easily allocate your daily calorie intake among the three primary macronutrients.
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What this calculator does
A macronutrient ratio calculator determines optimal protein, carbohydrate, and fat distribution based on your goals. Standard recommendations: 30% protein, 40% carbs, 30% fat for general fitness. Ratios shift for specific goals like muscle gain or fat loss.
How it works
Enter calories and goal. The calculator distributes macros using goal-specific percentages, then converts to grams.
Formula
General: 30P/40C/30F. Fat loss: 35P/35C/30F. Muscle gain: 30P/45C/25F. Grams = (Calories × %) ÷ (4 for P/C, 9 for F).
Tips for using this calculator
- Protein is typically fixed at 0.8-1g per lb body weight first
- Adjust carbs and fat based on energy needs and preference
- Track macros for 1-2 weeks to calibrate
- Quality matters—whole foods over processed
- Adjust ratios based on results after 4+ weeks
Frequently asked questions
How do I know if my ratios are right?
Monitor energy, performance, body composition over 4+ weeks. Adjust if not progressing.
Should I change ratios on rest days?
Optional. Some reduce carbs on rest days; others keep consistent. Experiment to find what works.