Strength toolkit
Turn a known or estimated 1RM into an approximate working-weight chart for your next session.
| Reps | Approx. % of 1RM | Estimated weight |
|---|---|---|
| 1 | 100% | — |
| 2 | 96.8% | — |
| 3 | 93.8% | — |
| 4 | 90.9% | — |
| 5 | 88.2% | — |
| 6 | 85.7% | — |
| 8 | 81.1% | — |
| 10 | 76.9% | — |
| 12 | 73.2% | — |
| 15 | 68.2% | — |
Based on the Epley relationship. Individual endurance can produce materially different results, especially above 10 reps.
Choose a rep target, start with the displayed estimate, then adjust for the exercise, your technique, and the number of hard sets you need to complete.
For a safer estimate, use our one-rep max calculator. Then compare the result with our strength standards and load the bar with the plate calculator.
Calculator outputs are estimates. Read the methods, sources, and limitations.
