1RM (One-Rep Max) Strength Calculator
Estimate one-rep max (1RM) using Epley, Brzycki, and Lombardi formulas.
Output
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Privacy & Security
Calculated locally in your browser. Not medical advice. Lift safely.
How to Use
Enter weight and reps to estimate 1RM with multiple formulas.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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