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Calculate your one-rep max (1RM) for any lift. Your one-rep max is the max weight you can lift for a single repetition for a given exercise.
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Strength standard tables of one-rep max performance against...
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Step 1: Understanding the Purpose. The 1 Repetition Maximum (1RM) calculator is a tool designed to estimate the maximum weight you can lift for one repetition. This can help you assess your strength and tailor your workouts effectively. The calculator utilizes different formulas to provide a comprehensive analysis.
1rm.io is a free online tool for calculating your 1RM (1 Rep Max). It's brought to you by the folks who make Leadrbox *, a software company focused on bettering the lives of athletes and trainers through technology.
This free calculator estimates a person's one-rep max (1RM) based on the number of repetitions they can perform with a given weight.
Use our 1RM calculator to estimate how much weight you can lift in a one-rep max. Simply enter the number of reps you can do with a given weight (in any unit) and hit enter, and we will calculate not only your one-rep max, but also your 1–10RM.
Reps and Weights calculator Enter the weight and reps to get an estimate of your 1RM (one rep max) and various rep and percentage schemes calculated with six different methods
Calculate your one rep max and then check out the leaderboard to see how you stack up against the strongest Gravitus users for our most popular exercises.
