1RM Calculator
Calculate your One-Rep Max (1RM) to optimize your strength training.
Reps to Percentage Reference
| Reps | % of 1RM | Training Goal |
|---|---|---|
| 1 | 100% | Max Strength |
| 2-3 | 90-95% | Power / Strength |
| 4-6 | 85-90% | Strength / Hypertrophy |
| 8-12 | 65-80% | Hypertrophy (Muscle Growth) |
| 15+ | < 60% | Endurance |
Ready to put these numbers to work?
Download our customizable Interval Timer App. Perfect for HIIT, Tabata, and keeping your workouts on track anywhere, anytime.