One Rep Max (1RM) Calculator

One Rep Max (1RM) Calculator

What is a one rep max calculator?

A one rep max calculator estimates the maximum weight you can lift for one repetition based on your current performance.

What does 1RM mean?

1RM stands for one repetition maximum, which is the heaviest weight you can lift once with proper form.

How is 1RM calculated?

This calculator uses the Epley formula, which estimates your max strength based on the weight lifted and number of repetitions.

Why use a 1RM calculator?

It helps you:

  • Track strength progress
  • Plan workouts
  • Avoid lifting too heavy

Is it accurate?

It gives a good estimate, but actual max strength may vary.

Important note

Always lift safely and avoid testing maximum weight without proper technique or supervision.


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