FitFormulas

IIFYM Calculator

If It Fits Your Macros, made simple.

Private by design — everything is calculated on your device, nothing is stored
kcal

Try: Calorie target=2000, Protein %=30, Carbs %=40, Fat %=30 → 2,000 kcal, 150 g (30%), 200 g (40%), 67 g (30%)

How to use

IIFYM ("flexible dieting") tracks macros instead of forbidding foods. Enter your split to see the gram targets; you can eat any food that fits.

Formula

grams = kcal × % / density

FAQ

Does food quality not matter?

Micros do — most IIFYM eaters still favour nutrient-dense food.

Track every day?

Consistency matters more than perfection.

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