One Rep Max (1RM) Calculator: Estimate Your Max Lift Power

Calculate Your One Rep Max (1RM)

Your Estimated One Rep Max (1RM):

Estimate your One Rep Max (1RM) with our easy-to-use calculator. Find your maximum lifting potential for any exercise to optimize strength training, track progress, and plan your workout routines safely and effectively.

Formula:

The calculator uses a widely accepted formula to estimate your One Rep Max (1RM). A common formula is the Epley Formula:

  • 1RM = Weight × (1 + (Reps / 30))

Where:

  • 1RM = Your estimated One Rep Max
  • Weight = The weight you lifted successfully
  • Reps = The number of repetitions performed with that weight

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