worldofcalcsOne Rep Max Calculator 🏋️
Estimated 1 Rep Max
70 kg
Training Percentages
| Intensity | Weight (kg) | Reps (Approx) |
|---|---|---|
| 95% | 67 | 2 |
| 90% | 63 | 4 |
| 85% | 60 | 6 |
| 80% | 56 | 8 |
| 75% | 53 | 10 |
| 70% | 49 | 12 |
| 60% | 42 | 15+ |
| 50% | 35 | 15+ |
About 1RM Calculator
Your One Rep Max (1RM) is the maximum amount of weight you can lift for a single repetition. Knowing this helps you plan your training intensity.
How it Works
This calculator uses the Epley Formula, a widely accepted method for estimating 1RM based on sub-maximal lifts. It is most accurate when the number of reps is less than 10.
Safety First
Attempting a true 1RM test can be dangerous without a spotter. Using a calculator allows you to estimate your strength safely without pushing to absolute failure.