One-rep max calculator (1RM)
Estimates your max single-rep load from a working set (Epley and Brzycki, averaged). Most accurate for 1–10 reps.
Your 1RM
Fill in all fields — the result appears automatically
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- 95%
- — kg
- 90%
- — kg
- 85%
- — kg
- 80%
- — kg
- 75%
- — kg
- 70%
- — kg
This calculator is for informational purposes only and is not medical advice. Consult a doctor or qualified professional before changing your diet or training.