One Rep Max Calculator

Calculate your one-rep max (1RM) for any lift. Your one-rep max is the max weight you can lift for a single repetition for a given exercise.

Repetition Percentages of 1RM

Repetitions Percentage of 1RM
1 100%
2 97%
3 94%
4 92%
5 89%
6 86%
7 83%
8 81%
9 78%
10 75%
11 73%
12 71%
13 70%
14 68%
15 67%
16 65%
17 64%
18 63%
19 61%
20 60%
21 59%
22 58%
23 57%
24 56%
25 55%
26 54%
27 53%
28 52%
29 51%
30 50%

Rate Your Lifts Against Other People

The Strength Level Calculator can show your exact level of strength at any bodyweight.

Calculate Your Strength

Track Your Progress

Track your progress with an online training log and push harder to get your next personal best.

Go from beginner to elite. Whether you are cutting down your body fat or bulking up your muscles, Strength Level will give you confidence that you are becoming a better athlete.

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