Disclaimer

CalcForFit provides estimation tools for informational purposes only. Nothing on this site is medical, dietary, or professional fitness advice.

Not a substitute for professional guidance. The calculators on this site — including but not limited to one-rep max, protein, body fat percentage, and training percentage tools — use established formulas to estimate results based on the information you provide. They are not a diagnosis, a prescription, or a personalized recommendation. Before starting any new training program, significantly changing your diet, or making decisions based on a body composition estimate, talk to a doctor, registered dietitian, or qualified fitness professional — especially if you have an existing health condition, injury, or are pregnant.

Estimates, not guarantees. Every formula used on this site is a widely recognized method in strength training and nutrition science, but all estimation formulas have margins of error. Individual results vary based on factors a formula can’t measure — technique, recovery, genetics, and day-to-day condition among them. Treat every result here as a planning guide, not a certified measurement.

Training risk. Strength training carries an inherent risk of injury, particularly when testing near-maximal loads. Never attempt a heavy lift without appropriate supervision, spotting, or safety equipment. Use estimated numbers from this site to inform your training conservatively, not as a target to chase regardless of how your body feels on a given day.

No liability. By using this site, you agree that CalcForFit and its creator are not liable for any decision made, injury sustained, or outcome experienced based on information provided here. Use these tools as one input among many, alongside your own judgment and professional guidance.

If anything on this page or elsewhere on the site is unclear, reach out through the Contact page.