One Rep Max Calculator
Calculate your one rep max, based on your max reps.
Result
Update the above form, to update the result.
Your one rep max is: _ LB
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.