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One Rep Max Calculator

One Rep Max Calculator

Estimate your 1RM for Squat, Bench, and Deadlift without testing to failure.

User Profile

Lift Stats

lbs

Estimated 1RM
257.8 lbs
Based on Epley & Brzycki formulas
Strength Level
Intermediate
Next Level
271 lbs
Relative Strength
1.91 x BW
Wilks Score
97.9

Training Percentages (% of 1RM)

100%
258
95%
245
90%
232
85%
219
80%
206
75%
193
70%
180
65%
168
60%
155
55%
142
50%
129

Epley Formula

1RM = Weight * (1 + Reps/30)

Training Percentages

Once you know your 1RM, plan your program:
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