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Last updated: February 9, 2026
See exactly how long each calorie surplus takes, how much muscle you can expect to gain, and when to stop bulking. Weekly weight projections and macro targets for 3 surplus levels. Based on real calorie math, not bro science.
FitCommit offers 3 surplus levels, from a conservative 5% lean gain to an aggressive 12% surplus. Each level includes daily calories, weekly weight gain, expected muscle-to-fat ratio, and training recommendations. Pick the level that matches your experience and how much fat gain you are comfortable with.
A small, slow surplus that helps keep fat gain minimal.
8-12 weeks
A faster pace that requires consistent training and sleep.
4-6 weeks
Not sure where you stand? Use FitCommit's AI body scan to get your current body fat percentage in 60 seconds. That number tells you whether to bulk or cut.
A lean bulk uses a 5-8% surplus (200-400 calories above TDEE). This maximizes muscle gain while minimizing fat gain. Aggressive bulks at 10-12% surplus build muscle faster but add more fat. Dirty bulks (15%+) are inefficient and require longer cuts afterward.
Bulk for 12-24 weeks, or until you reach your upper body fat limit (typically 15-17% for men, 24-27% for women). Longer bulks maximize muscle gain. Shorter bulks work if you want to stay leaner year-round. Take maintenance breaks every 12-16 weeks to reset.
Beginners can gain 1-2 lbs of muscle per month. Intermediate lifters gain 0.5-1 lb per month. Advanced lifters gain 0.25-0.5 lb per month. Genetic potential, training quality, sleep, and nutrition all affect these rates. Gaining weight faster than this means adding mostly fat.
Yes, for most people. Building new tissue requires energy above maintenance. Beginners and detrained lifters can build muscle at maintenance or slight deficits, but progress is slower. A controlled surplus is the most efficient path to muscle growth.
Protein: 0.8g per lb lean mass (sufficient for muscle growth). Fat: 25-30% of calories (for hormones and satiety). Carbs: fill the rest (fuel for training and recovery). Higher carbs support better performance in the gym. Track weight gain weekly and adjust calories if needed.
Deficit and surplus percentages with TDEE calculations
How many calories you need per day by age, gender, and activity
Protein content for common foods to hit your daily target
Build muscle and lose fat at the same time
Form guides and muscle targets for popular exercises
High-protein meals and recipes organized by goal
AI body scan from your phone camera. Get your body fat percentage, daily calorie surplus, and a week-by-week muscle gain projection in 60 seconds. No equipment. No gym. Free 1-month trial.
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