FitFormulas

Lean Bulk Calculator

Build muscle without excess fat.

Private by design — everything is calculated on your device, nothing is stored
kg
cm
%

Try: Weight=75, Height=178, Age=28, Sex=male, Activity=1.55, Surplus=15 → 2,678 kcal, 15 %, 3,079 kcal, 150 g, 427 g, 86 g

How to use

Lean bulking uses a small surplus (~10–15%) and high protein so most of the gain is muscle, not fat. Same engine as the bulking calculator.

Formula

Intake = TDEE × (1 + surplus/100)

FAQ

Lean bulk vs dirty bulk?

Lean keeps the surplus small; dirty uses large surpluses and adds more fat.

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