Free RM Calculator

Stronger lifting 150 lbs 10 times or 200 lbs 5? This simple but versatile Rep Max Calculator helps you analyze and realize your true development in the gym - a tool no one should go to the gym without

Choose your favourite from a variety of well know 1 RM formulas. Find your favourite through comparition and test your strength with different weights at different rep counts.

Formulas are applied to work for lbs as well as Kg.