One Rep Max Calculator
This One Rep Max Calculator will estimate your 1RM based on the weight and number of reps you can perform. Enter the weight and select the number of reps, then click calculate.
What weight did you use?
How many reps did you do?
Why is 10 the maximum?
Two main reasons:
The higher the rep count the less accurate the calculator.
If you are hitting more than 10 reps, the weight isn’t heavy enough to test you.
Your Estimated One Rep Max:
Scaling your 1 Rep Max:
| 50% | |
| 55% | |
| 60% | |
| 65% | |
| 70% | |
| 75% | |
| 80% | |
| 85% | |
| 90% | |
| 95% |