One Rep Max Calculator

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Understanding how much weight you can lift based on repetitions is helpful for your training. Here’s a simple list showing the percentage of your one-rep max (1RM) you might use, depending on the number of times you can lift it:

  • 1 rep: 100%
  • 2 reps: 97%
  • 3 reps: 94%
  • 5 reps: 89%
  • 10 reps: 75%
  • 20 reps: 60%

Want to Boost Your Strength?

Boostcamp is an app you can download for free on iOS and Android. It provides you with tried-and-tested programs, lets you make your own plans, and helps you keep track of your workouts. With more than 10,000 people rating it at 4.8 stars, it’s a reliable tool for strength training.

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Check your strength level at any weight. Get insights into where you stand and measure your strength.

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Strength Level’s Paper Workout Journal

You can track your workouts in a paperback journal that includes extra pages for setting goals and noting personal records.