One Rep Max Calculator
Disclaimer: Estimated 1RM values are training references and not a substitute for professional coaching or medical advice.
Estimate your 1RM, compare formulas, evaluate strength level, and generate practical training and warm-up guidance.
Use Cases
- • Program working sets by 1RM percentages
- • Track strength-to-bodyweight progression
- • Compare formula estimates across rep ranges
- • Build structured warm-up ladders
Formulas Used
- • Epley, Brzycki, Lander, and Mayhew
- • Strength-to-weight ratio calculation
- • Relative progress vs advanced standard