One Rep Max Calculator

One Rep Max Calculator to calculate the one-rep max for weight lift. The one-rep max is the maximum weight you can lift for a single repetition in your exercise. 1rm Calculator is calculated based on the weight you lift and the number of repetitions.

1rm Calculator

Weight lifted:
Repetitions
Your One Rep Max is:

1 Rep Max Calculator

Following is the 1 rep max calculator table that shows repetitions of 1RM, percentage of 1RM and weight lifted.

Repetitions of 1RM Percentage of 1RM Weight lifted
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%

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