How to Plan Your Bodybuilding Cutting Phase
The cutting phase is a critical period before a bodybuilding competition where athletes systematically reduce body fat while preserving as much muscle as possible. This calculator helps you determine the optimal weekly weight loss rate and daily calorie deficit based on your current weight, stage weight goal, and available prep time.
A safe cutting rate is 0.5–1% of body weight per week. For a 185 lb (84 kg) athlete, this means losing 0.9–1.8 lbs (0.4–0.85 kg) per week. Faster cuts increase the risk of muscle catabolism. Maintain protein intake at 0.8–1 gram per pound of body weight throughout the cut to protect lean mass.
Give yourself at least 8–16 weeks of prep time. Rushing into competition week with too much weight to lose forces aggressive deficits that compromise performance and physique. The final 1–2 weeks involve a separate peaking protocol that is distinct from the regular cutting phase.
Frequently Asked Questions
A safe rate is 0.5–1% of body weight per week. Losing too fast risks significant muscle loss. Allow at least 8–16 weeks of prep time to reach your stage weight safely.
A deficit of 500–750 kcal/day supports about 0.5 kg per week of fat loss. Keep protein high at 0.8–1g per lb of body weight to preserve muscle during the cut.
Peaking is the final 1–2 weeks where competitors manipulate carbs, water, and sodium to maximize muscle definition on stage. This is separate from the regular cutting phase and often requires coach guidance.