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Bulking Calculator

What is a lean bulk?

A lean bulk is a controlled calorie surplus designed to maximize muscle gain while limiting fat gain. A typical bulking calculator sets a surplus of +250 kcal/day (lean) to +500 kcal/day (standard), with protein at 1.6-2.2 g/kg bodyweight. Natural lifters can gain roughly 2-4 lbs of muscle per month - eating beyond a moderate surplus just adds fat.

Imperial (lbs, inches)

Quick Facts

250-500
Optimal Surplus (cal)
2-4 lbs
Max Muscle/Month
2.0g/kg
Protein Daily
3-6 mo
Bulk Duration

Bulking FAQ

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