Tool 02 / Numbers
1RM & PERCENTAGE CHART.
Enter a weight and a rep count to estimate a one-rep max, cross-check it with a second formula, and read your working loads from 95% down to 60%.
NumbersNo loginFree
Estimated 1RM · EpleyBrzycki: 152 lb
158lb
Built from 135 lb × 5 reps. Use the chart to choose working loads, not to test a max.
Percentage chartRounded to 5 lb
- 95%150 lb
- 90%140 lb
- 85%135 lb
- 80%125 lb
- 75%120 lb
- 70%110 lb
- 65%100 lb
- 60%95 lb
Estimates only — ask a coach before maxing out. Percentage loads are rounded to the nearest 5 lb.
Built to be used on a phone on the gym floor. No account, no app install, no data sent to a server.
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PUT THE NUMBER TO WORK.
Bring your chart to a class or a personal training session and a coach will help you choose the right load for the day.
Or call (619) 534-1201