MuscleGrowthPlan.com Tools

Calculate Your Muscle-Building Plan

Estimate your natural muscle potential, daily protein, lean-bulk calories, FFMI, one-rep max, creatine intake, and realistic progress timeline.

Start With Muscle Potential

Natural Muscle Potential Calculator

Estimate how much additional lean mass you may have room to gain using current FFMI and a selectable natural target. This is an educational range, not a genetic limit.

Results are estimates. FFMI does not account for bone structure, muscle distribution, ethnicity, training history, measurement error, or individual genetics.

Protein Calculator

Calculate a practical daily protein range for resistance training.

Lean-Bulk Calorie Calculator

Estimate maintenance calories using Mifflin–St Jeor, then add a modest surplus.

FFMI Calculator

Estimate fat-free mass index from height, weight, and body-fat percentage.

One-Rep Max Calculator

Estimate your 1RM from a submaximal set using the Epley equation.

Creatine Intake Calculator

Estimate an optional loading protocol and a standard maintenance range.

Creatine is optional. People with medical conditions, kidney concerns, pregnancy, or medication questions should consult a qualified healthcare professional.

Turn Your Numbers Into a Plan

Enter your email to get the free 12-Week Muscle Growth Plan sent straight to your inbox.

Important: These tools provide general educational estimates and are not medical, nutritional, or diagnostic advice. Results can differ from actual needs because of measurement error, health status, genetics, medications, environment, activity, and other factors. Consult qualified professionals before making major training, diet, or supplementation changes.