One-rep max (1RM)
Weight × reps → 1RM (Epley/Brzycki) and percentage table
Set
Epley (w×(1+r/30)) and Brzycki (w×36/(37−r)) formulas are accurate up to ~10 reps; beyond that the spread is large. Don't actually attempt a 1RM without a spotter — estimate from submaximal sets. Typical percentages: strength 85–95% (1–5 reps), hypertrophy 67–85% (6–12), endurance <67%.
1RM & percentages
1RM (Еплі)101.3 кг
1RM (Бжицкі)99.3 кг
Average100.3 кг
95%
95
95
90%
90
90
85%
85
85
80%
80
80
75%
75
75
70%
70
70
65%
65
65
60%
60
60