one rep max coolHow to use our One Rep Max (1RM) Calculator:

  1. Enter weight lifted using the slider. You can adjust the value incrementally using the + or – buttons.
  2. Enter the number of repetitions you performed.

Your estimated 1RM will automatically be calculated (Epley formula) based on the values you entered. This will provide a decent estimate of what you could lift without actually having to “max out”, which can cause injury. This can be a useful tool for beginning and advanced lifters alike.

1 RM:
1RM 95% 90% 85% 80% 75% 70% 65% 60%

Based on your 1RM result, the table below estimates the reps and weight estimates you could perform, comparing calculations from three different methods.

Estimated Reps and Weight
# Reps Baechle (lbs) Brzycki (lbs) Dos Remedios (lbs)

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One thought on “One Rep Max Calculator”

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