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One Rep Max Calculator
Estimate One Rep Max with transparent assumptions.
Choose a 1RM equationCompare four established repetition-based estimates.
4 optionsESTIMATED ONE-REP MAX116.66666667 kg
Epley equation; use a spotter and conservative training loads. Educational estimate only; not medical advice.
- 90% training load
- 105.0 kg
- 80% training load
- 93.3 kg
Formula checkedSelectable Epley, Brzycki, Lander, and Lombardi one-repetition maximum estimates.