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One rep max calculator.

Estimate your single-rep maximal lifting capacity and generate training percentage charts.

Percentage Breakdown 1RM: 140 kg
100% (1 Rep) 140.0 kg
90% (3 Reps) 126.0 kg
80% (6 Reps) 112.0 kg
Under Development
Coming Soon

Planned features:

  • Calculates using 5 standard formulas.
  • Generates custom RPE percentage grids.
  • Tracks warm-up sequence loads.