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Strength Training Percentage Calculator

How to calculate your training percentages based on your 1RM

Training based on percentages of your one-rep max (1RM) is the foundation of powerlifting, Olympic weightlifting, and modern strength programs. With our weightlifting percentage calculator, you can quickly and efficiently plan your exact training loads.

What is 1RM and why does it matter?

Your 1RM is the maximum weight you can lift for a given exercise for a single repetition while maintaining proper form. Knowing this number allows you to train across different intensity zones (max strength, hypertrophy, power, or muscular endurance).

Common Intensity Zones in Weightlifting