Calorie Surplus Calculator

Calculate optimal calorie surplus for muscle gain (bulking).

Maintenance Calories
Daily Surplus
Target Calories
Weekly Gain (kg)
Monthly Gain (kg)
Protein (g)
Carbs (g)
Fat (g)

Building Muscle with a Surplus

To build muscle, you need a calorie surplus (eating more than TDEE), progressive strength training, and adequate protein. However, muscle gain is slow - even in optimal conditions, natural lifters gain 0.25-0.5kg muscle per month. Larger surpluses lead to more fat gain.

Optimal Surplus by Experience

Beginners: 300-500 cal surplus (can gain muscle faster)
Intermediate: 200-300 cal surplus (slower muscle gain)
Advanced: 100-200 cal surplus (very slow muscle gain)
Smaller surpluses minimize fat gain while supporting muscle growth.

Bulking Strategy

Track weight weekly. Aim for 0.25-0.5% body weight gain per week. If gaining too fast, reduce calories. Prioritize progressive overload in training. Higher carbs support training performance. Consider mini-cuts every 12-16 weeks if body fat gets too high.

Quick Tips

  • BMI alone doesn't reflect overall health
  • TDEE varies based on activity level
  • Consult a healthcare professional for medical decisions

Frequently Asked Questions

Beginners: 1-1.5kg. Intermediate: 0.5-1kg. Advanced: 0.25-0.5kg. Half is muscle, half is fat/water.

Some fat gain is normal. Smaller surpluses minimize it. Expect 50/50 muscle to fat ratio.

Beginners can build muscle in maintenance/deficit. Intermediates and advanced benefit from surplus.

Until body fat reaches upper comfortable range (15-18% for men, 25-28% for women), then cut.

Large surpluses (1000+ cal) lead to excessive fat gain without more muscle. Lean bulk is better.