Macro Calculator
Use this calculator to split your daily calories into protein, carbs, and fat using simple presets or your own custom ratio.
Enter your details
Your results will appear here
Enter your calorie target, choose a macro split, and click Calculate macros to see your daily targets.
What your result means
This calculator splits your daily calories into protein, carbs, and fat targets using either a preset or your own custom percentages.
Your macro targets are planning numbers, not a rule that has to be hit perfectly every day.
How the split works
Protein and carbs are calculated at 4 calories per gram, while fat is calculated at 9 calories per gram.
Calories still matter most overall. Macros help structure that calorie target into practical daily numbers.
Worked example
Example inputs
- Daily calories: 1,800 calories/day
- Preset: Fat loss / higher protein
- Split: 30% protein, 40% carbs, 30% fat
Example outputs
- Protein: 135 g/day
- Carbs: 180 g/day
- Fat: 60 g/day
This example shows how the calculator converts a calorie target into macro grams using a simple preset split.
Common mistakes
- Thinking the macro split matters more than the total calorie target.
- Using extreme custom percentages that are hard to maintain.
- Assuming one macro ratio is best for everyone.
Related tools
Check your protein targetProtein Intake Calculator
Check whether your protein target fits your body weight and goal.
Calorie Deficit Calculator
Set your calorie target before splitting it into macros.
TDEE Calculator
Estimate maintenance calories before planning macros.
Macros Explained Simply
Read a plain-English guide to protein, carbs, and fat.
Disclaimer
This calculator gives a general estimate for educational use and is not medical advice.