Macro Calculator
Macronutrient split (carbs / protein / fat) for your calories.
Amortization schedule
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Showing first 12 of months.
Growth over time
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Introduction
Macro Calculator — Macronutrient split (carbs / protein / fat) for your calories. Enter Daily calories, Diet split to get an instant, accurate result.
Formula
Grams = (calories × split% / 100) / 4 for protein and carbs, / 9 for fat (based on standard 4/4/9 kcal-per-gram values).
Step-by-step
- Enter the Daily calories.
- Enter the Diet split.
- Click Calculate to see your result instantly.
Real-world example
Example: With Daily calories = 2000, Diet split = balanced, the Macro Calculator gives Protein G: 150, Carbs G: 225, Fat G: 55.5556.
Frequently Asked Questions
Why does fat use 9 instead of 4?
Fat contains roughly 9 calories per gram, compared to 4 calories per gram for protein and carbohydrates.
Which split should I choose?
Balanced suits most people; low-carb/keto suit those specifically targeting reduced carbohydrate intake.
What inputs does the Macro Calculator need?
You'll need to provide: Daily calories, Diet split. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Macro Calculator?
The Macro Calculator applies the formula exactly as calculated — Grams = (calories × split% / 100) / 4 for protein and carbs, / 9 for fat (based on standard 4/4/9 kcal-per-gram values). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is this a medical diagnosis?
No. The Macro Calculator provides an estimate based on standard formulas and general population data, not a medical diagnosis or personalized clinical advice. Individual results can vary — consult a doctor or other qualified healthcare provider for medical concerns.
Is the Macro Calculator free to use?
Yes, the Macro Calculator is completely free, requires no signup, and runs instantly in your browser.
About the Macro Calculator
The Macro Calculator uses a real, verifiable formula — Grams = (calories × split% / 100) / 4 for protein and carbs, / 9 for fat (based on standard 4/4/9 kcal-per-gram values). — so results are accurate every time, not an approximation.