POST40GAINS Logo POST40GAINS

A collection of powerful fitness tools to help you achieve your goals.

1 Rep Max Calculator

Estimate Your Strength with This 1 Rep Max Calculator!

This 1 Rep Max Calculator is your 1RM estimator of how much weight you can lift for a single repetition (your 1RM) utilizing a weight which you already know that you've lifted for a number of repetitions. It's especially useful to measure your increase in strength, calculate your lift percentages for different purposes of your training, as well as see how far you've come!

Here is the mechanism:

Think of this as your virtual strength coach, teaching you about your strength and allowing you to train smarter and safer!

How's that then, man? Are you prepared to set your maximum and figure out how much you can really do?

Share This Tool: