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Strength · Epley + Brzycki

One-Rep Max

Estimate your 1RM from any sub-maximal set and read off the loads for every rep bracket.

Weight lifted

Unit

Reps completed5 reps

Estimates are most accurate at 2–10 reps. A true single (1 rep) is reported as-is.

Estimated one-rep max

257.8lb

Consensus of the Epley and Brzycki formulas — steadier than either alone.

The two estimates

Epley (1985)262.5 lb

Brzycki (1993)253.1 lb

Training loads

Reps	% of 1RM	Load (lb)
1	100%	258
2	97%	250
3	94%	242
5	89%	229
8	81%	209
10	75%	193
12	69%	178
15	61%	157

Percent-of-1RM targets from the Brzycki chart. Round to the nearest plate and leave a rep in reserve on working sets.