1 Rep Max Calculator

FREE Muscle Building Program
Gain Muscle, Burn Fat
And Increase Strength!

Enter your first name and a valid email address
for free instant access to these muscle building workouts.

First Name:
Email Address:

1 Rep Max Bench Press Conversion Calculation

Determining your 1RM (Rep Max)

What is 1 Rep Max?

One Repetition Maximum. This is the WEIGHT you can perform an exercise with ONCE. Using a calculator is usually the best and safest way to determine your 1RM, based on the amount of times you can lift a less heavy weight.

How do I measure my 1RM?


Use the calculator to approximately work out what your 1RM is. After your warm up, use a weight with which you can perform less than 10 repetitions before you reach failure. Fill out those numbers on the left and click Calculate to find out your 1 RM.


55% 60% 65% 70% 75% 80% 85% 90% 95%

To increase your 1 rep max checkout the Bench Press Workout

Click Here to Sign Up for Your Free Muscle Building Magazine

Disclaimer: This information is for entertainment purposes only. We strongly recommend that you consult a physician before beginning any exercise program. MuscleNet.com is not a licensed medical care provider. The reader should understand that participating in any exercise program can result in physical injury and agrees to do so at his own risk. The findings and opinions of authors expressed herein are those of the author and do not necessarily state or reflect those of MuscleNet.com.

Copyright © 1996-2013 MuscleNet.com