Single Rep Max Calculator

Professional Strength Tools by calczen.com

Weight Lifted

lbs

Repetitions

Estimated 1RM

0 lbs

Calculated using the Epley Formula

Training Percentages

Intensity	Weight	Target Reps

Note: Estimates are most accurate when inputting repetitions between 2 and 10. The Epley formula is used: $1RM = w(1 + r/30)$, where $w$ is weight and $r$ is reps.

Enter weight and reps to see your max

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