๐๏ธ One-Rep Max Calculator
Estimated 1RM93.3 kg
| % | Weight |
|---|---|
| 100% | 93.3 kg |
| 95% | 88.7 kg |
| 90% | 84.0 kg |
| 85% | 79.3 kg |
| 80% | 74.7 kg |
| 75% | 70.0 kg |
| 70% | 65.3 kg |
| 65% | 60.7 kg |
| 60% | 56.0 kg |
| 50% | 46.7 kg |
Enter a weight you lifted and how many reps you performed, and this tool estimates your one-rep max (1RM) using the Epley formula. It also shows a reference table of weights from 50% to 100% of your 1RM, handy for planning training loads.
How to use
- Enter the weight you actually lifted.
- Enter the number of reps you performed with it.
- Your estimated 1RM and a percentage-based weight table are shown automatically.
FAQ
What is the Epley formula?
It's a widely used formula for estimating your one-rep max from a lifted weight and rep count: 1RM = weight ร (1 + reps รท 30).
How accurate is this estimate?
It's a statistical estimate that varies by individual and exercise. Use it as a general guideline โ if you want to actually test your 1RM, be sure to warm up thoroughly and have a spotter.
Why is the rep count capped at 20?
Estimation accuracy drops as the rep count increases, so it's limited to the range generally considered reliable (20 reps or fewer).