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Macro Calculator
Inputs
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How it works
Each macro provides a fixed energy density (4/9/4 kcal/g for protein/fat/carbs). Multiply total kcal by the % split, then divide by the kcal/g for grams.
Worked example
2,200 kcal, balanced split: 165g P, 73g F, 220g C.
Who should use this
- •Anyone tracking macros for performance
- •Diet planners — keto, IIFYM, contest prep
Common mistakes
- ×Setting protein too low when cutting (causes muscle loss)
- ×Confusing 'low carb' with 'no carb' — carbs aren't bad
Frequently asked questions
How much protein do I need?▾
1.6-2.2 g/kg body weight covers most active adults; closer to the top end when cutting.