One Rep Max (1RM) Calculator
One Rep Max (1RM) is the maximum weight you can lift for a single repetition. This calculator helps you estimate your 1RM based on your current training weight and reps, and provides weight recommendations for different training goals.
Input Data
Results
Please enter weight and reps
Calculation Information
The One Rep Max (1RM) calculator uses different formulas to estimate your maximum lifting capacity. Each formula may produce slightly different results, so choose the one that works best for you.
Formula Explanations
- Epley: Weight × (1 + 0.0333 × Reps)
- Brzycki: Weight × 36 / (37 - Reps)
- Lombardi: Weight × (Reps ^ 0.10)