Macro Split Calculator
Turn daily calories into protein, carb and fat grams.
Enter your values
Enter the daily calories in kcal.
Enter the protein in %.
Enter the carbs in %.
Enter the fat in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Protein
- 165 g
- Carbohydrate
- 220 g
- Fat
- 73 g
- Per meal (3 meals)
- 55 g protein each
Working
- 1shares normalised to 100%
Quick answer
Protein and carbs give 4 kcal per gram, fat gives 9, so any calorie target converts directly into gram targets.
grams = calories x share / kcal per gram
At a glance
| What it does | Turn daily calories into protein, carb and fat grams. |
|---|---|
| Category | Health |
| Inputs needed | Daily calories, Protein, Carbs, Fat |
| Main output | Protein |
| Formula | grams = calories x share / kcal per gram |
| Cost | Free — no sign-up, no download |
How to use the Macro Split Calculator
- 1Enter your daily calorie target.
- 2Set the percentage split you want; the tool normalises if it does not total 100.
- 3Hit protein first, then fill the rest with carbs and fat.
Inputs explained
- Daily calories(kcal)
- Enter the daily calories in kcal.
- Protein(%)
- Enter the protein in %.
- Carbs(%)
- Enter the carbs in %.
- Fat(%)
- Enter the fat in %.
Worked example
Using the values the calculator loads with:
Inputs
- Daily calories2200 kcal
- Protein30 %
- Carbs40 %
- Fat30 %
Results
- Protein165 g
- Carbohydrate220 g
- Fat73 g
- Per meal (3 meals)55 g protein each
- shares normalised to 100%
Frequently asked questions
Best split for fat loss?
Higher protein — 30-35% — preserves muscle and controls hunger.
Do macros matter more than calories?
Calories set weight change; macros shape body composition and how you feel.
What do I need to enter into the Macro Split Calculator?
Just 4 values: daily calories, protein, carbs, fat. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Macro Split Calculator work out the answer?
Protein and carbs give 4 kcal per gram, fat gives 9, so any calorie target converts directly into gram targets. It applies the formula grams = calories x share / kcal per gram and shows the working so you can check each step by hand.
Is the Macro Split Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.