Live tool/tool/one-rep-max-calculator

One-Rep Max Calculator

Estimate a one-rep max from a working set, then derive a conservative training max and common percentages.

FitnessStrengthReference

Lifted weight

Reps completed

Estimated 1RM

262.5 lb

Training max

236.3 lb

85% load

223.1 lb

95% load

249.4 lb

Formula

This uses the Epley equation and works best on solid working sets rather than max-effort grinders.