Health & Fitness
Macro Split Calculator
Split a daily calorie target into protein, carbohydrate and fat goals.
Preparing your result…
What this calculator does
Calculates Macro Split Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
grams = calories × macro share ÷ calories per gram
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Supported with stated scope. For daily energy E kcal, protein fraction p and fat fraction f: protein grams=Ep/4; fat grams=Ef/9; carbohydrate grams=E(1−p−f)/4. This is the conventional 4/4/9 energy allocation.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Require E>0, 0≤p,f≤1 and p+f≤1. Convert percent shares to fractions. This computes a chosen split; it does not establish a person’s required intake. Fiber/polyols/alcohol and detailed food-label energy factors may differ.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Daily calories (kcal) | Protein share (%) | Fat share (%) | Protein target |
|---|---|---|---|---|
| Worked example | 2,200 | 30% | 30% | 165 g/day |
| Half the amounts | 1,100 | 15% | 15% | 41.25 g/day |
| Double the amounts | 4,400 | 60% | 60% | 660 g/day |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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