Handy tools
1RM Calculator
Estimate your one-rep max from a lighter set, with a %1RM chart and strength grade.
Estimate your one-rep max (1RM) from a lighter set — enter the weight you lifted and how many reps you got. We combine the Epley and Brzycki formulas and show a %1RM training chart plus a strength-level grade scaled to your bodyweight.
Epley 116.7 kg · Brzycki 112.5 kg — the average is the headline estimate.
- Epley formula
- 116.7 kg
- Brzycki formula
- 112.5 kg
- Average (recommended)
- 114.6 kg
%1RM training chart
| % of 1RM | Weight | Typical reps |
|---|---|---|
| 100% | 114.6 kg | ~1 reps |
| 95% | 108.9 kg | ~2 reps |
| 90% | 103.1 kg | ~4 reps |
| 85% | 97.4 kg | ~6 reps |
| 80% | 91.7 kg | ~8 reps |
| 75% | 85.9 kg | ~10 reps |
| 70% | 80.2 kg | ~12 reps |
| 65% | 74.5 kg | ~15 reps |
| 60% | 68.8 kg | ~18 reps |
Strength level
Your estimated 1RM is 1.53× your bodyweight — Intermediate level.
Standards are relative to bodyweight, sex and lift. They're approximate references, not official ratings.
⚠️ This is an estimate only. Do NOT attempt an actual 1RM lift to verify it — max singles carry a real injury risk. Test with a spotter and proper progression.
Estimated with the Epley and Brzycki formulas; accuracy drops above ~10 reps. Not medical or training advice.
The 1RM Calculator estimates your one-rep max (1RM) from the weight and reps you lifted, using the Epley and Brzycki formulas. It calculates 1RM for squat, bench press, deadlift and overhead press, and shows a %1RM training chart plus a bodyweight-scaled strength grade (beginner to elite). Actually attempting a true 1RM carries injury risk, so use this as an estimate only. Pairs well with the TDEE, body-fat and macro calculators.