Health
1RM Calculator
Estimates your 1RM (maximum weight you can lift for 1 repetition) based on your current weight and rep performance. Useful for setting training intensities.
Estimated 1RM
91.7kg
Weight/Reps Percentages
| Percentage | Working Weight | Max Reps |
|---|---|---|
| 100% | 91.7 kg | 1 reps |
| 95% | 87.1 kg | 2-3 reps |
| 90% | 82.5 kg | 3-4 reps |
| 85% | 77.9 kg | 5-6 reps |
| 80% | 73.3 kg | 7-8 reps |
| 75% | 68.7 kg | 9-10 reps |
| 70% | 64.2 kg | 11-12 reps |
| 65% | 59.6 kg | 14-15 reps |
| 60% | 55.0 kg | 16-20 reps |
| 55% | 50.4 kg | 21-25 reps |
| 50% | 45.8 kg | 26-30 reps |
How to Use
- STEP 1
- Input the Weight (kg) and Reps you lifted to failure for an exercise.
- STEP 2
- The 1RM will automatically be calculated, generating a percentage table tailored for different training goals.
Notes
- Calculated using the average of both Brzycki and Epley formulas. Estimation accuracy drops for repetitions over 10.
- When attempting your true 1RM for the first time, always use a spotter for safety.
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