Toolifyr
Bench Press Calculator
Estimate your one-rep max using the Brzycki formula — with comprehensive reference tables
One-Rep Max Estimator
1RM by Weight & Reps (Reference)
| Weight (lbs/kg) | 1 rep | 2 reps | 3 reps | 4 reps | 5 reps | 6 reps | 7 reps | 8 reps | 9 reps | 10 reps |
|---|
Estimated 1RM using Brzycki formula: 1RM = Weight ÷ (1.0278 – 0.0278 × Reps). Full weight range: 45–400 lbs (20–180 kg) in steps of 5.
Estimated 1 Rep Max (1RM)
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Percentage of 1RM
| Percentage of 1RM | Lift Weight |
|---|
Rep Max Weights (PR Targets)
| Repetitions | Lift Weight |
|---|
Based on Brzycki formula. Rep max weights are derived from your estimated 1RM.