One Rep Max Calculator icon

One Rep Max Calculator

Rogan Software
Free (in-app purchases)
4.7 out of 5
1,000+ downloads

About One Rep Max Calculator

Simple, useful weightlifting/fitness app to estimate 1RM (one rep maximum) given a weight and number of reps.

Features:

* Estimates 1RM
* List reference for 95%, 90%, 85%, .. of calculated 1RM

Helps you quickly get the right plates on your barbell. Stop doing the math yourself!

App uses Brzycki Formula detailed here:
http://en.wikipedia.org/wiki/One-repetition_maximum

One Rep Max Calculator Screenshots