Free 1RM Calculator - One Rep Max Calculator with Multiple Formulas

1RM Calculator

Calculate your one-rep maximum using scientifically validated formulas

Your Lift

Available in the Bar is Loaded App

1RM Calculator in Bar is Loaded App

Access this 1RM calculator plus many more strength training tools in the Bar is Loaded app.

Load The Bar Already
What are you waiting for? You've come this far. All that’s left is to head over to the app store and download Bar Is Loaded today.