Enter any set you've completed — weight and reps — and estimate your one rep max plus every training percentage you need.
1RM = weight × (1 + reps/30) — accurate and widely used.
See estimated 3RM, 5RM, 8RM, 10RM and more instantly.
Program with 65–95% of your max for strength cycles.
Avoid risky max attempts — estimate your 1RM from submax sets.
Complete your lifting toolkit.