One Rep Max (1RM) Calculator

Estimate your 1-rep max and training percentages from a submaximal lift.

Weight Lifted

Reps (1–20)

Unit

Estimated 1RM213.8 lbs

Epley215.8

Brzycki208.1

Lombardi217.3

Training percentages:

100%213.8 lbs1–2 reps

95%203.1 lbs1–2 reps

90%192.4 lbs1–2 reps

85%181.7 lbs3–5 reps

80%171.0 lbs3–5 reps

75%160.3 lbs6–8 reps

70%149.6 lbs6–8 reps

65%138.9 lbs10–12 reps

60%128.3 lbs10–12 reps

55%117.6 lbs15+ reps

50%106.9 lbs15+ reps