Natural Muscle Potential Calculator
Multi-Model Estimate
Compare estimates from Berkhan, McDonald, and Casey Butt models
cm
cm
cm
Muscle Gain by Training Year
Estimate how much muscle you can gain per year (McDonald model)
Formula
Berkhan: Max lean mass = height(cm) - 100 | McDonald: Max lean = (height_in - 60) x 2.3 + 160 lbs | Yearly gains decrease each year
Frequently Asked Questions
What is my natural muscle potential?
Natural muscle potential is the maximum amount of muscle you can build without performance-enhancing drugs. It depends on height, bone structure (wrist/ankle size), and genetics. Most men can gain 18-23 kg of muscle over a lifetime of training.
How long does it take to reach your genetic potential?
Most people reach 85-90% of their genetic potential within 5-7 years of consistent, proper training. The last 10-15% can take another 3-5+ years. Diminishing returns make progress increasingly slow.
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