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One Rep Max Calculator

Calculate your one rep max, based on your max reps.

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FAQ

Frequently Asked Questions

What is a 1-rep max?

A 1-repetition max (1-RM) is the absolute maximum amount that can be lifted for one rep for any given exercise.

Does everyone needs to know their 1-RM?

Not necessarily. While knowing 1-RMs can be useful for intermediate and advanced lifters to provide accuracy for programming, beginners don't necessarily need to know their true 1-rep max strength.

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