One-Rep Max Calculator (Epley / Brzycki / Lombardi)
Estimate your 1RM from a sub-maximal set.
Result
Epley
262.5 lb
Brzycki
253.1 lb
Lombardi
264.3 lb
Average
260 lb
Approximate %1RM at 5 reps: 87% (Prilepin-style)
About this tool
Type weight lifted and reps to failure to get your 1RM across three formulas (Epley, Brzycki, Lombardi) plus a rep-by-rep %1RM table. The r/weightroom 'how much should I bench' classic.
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