Predicting One-rep Max

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Weight Lifted

Reps Performed

One-rep max
50% 1 RM
55% 1 RM
60% 1 RM
65% 1 RM
70% 1 RM
75% 1 RM
80% 1 RM
85% 1 RM
90% 1 RM
95% 1 RM

Instructions

Enter "Weight Lifted" and "Reps Performed". The repetitions must be between 1 and 10. Press "Calculate" for the weight you may be able to perform for a single repetition.


Estimated Reps at Percent of 1 Repetition Maximum

Reps:
1 2 3 4 5 6 7 8 9 10 11 12 15
%1RM Brzycki 100 95 90 88 86 83 80 78 76 75 72 70

 

Baechle 100 95 93 90 87 85 83 80 77 75

 

67 65
dos Remedios 100 92 90 87 85 82

 

75

 

70

 

65 60

Brzycki, Matt (1998). A Practical Approach To Strength Training. McGraw-Hill.

Baechle TR, Earle RW, Wathen D (2000). Essentials of Strength Training and Conditioning, 2: 395-425.

dos Remedios R (2007) Men's Health Power Training, Rodale Inc. 23.

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