One Rep Max Calculator
Enter a weight and how many reps you lifted it for; get your estimated one rep max and a training percentage table.
How this calculator works
Epley (1985) and Brzycki (1993) formulas, averaged. Training percentages follow common strength programming conventions (Prilepin-style loading).
More calculators
- BMI CalculatorBody mass index and where it lands on the WHO scale.
- Calorie CalculatorDaily calories to maintain, lose, or gain weight.
- Body Fat CalculatorBody fat percentage from tape measurements (US Navy method).
- BMR CalculatorCalories your body burns at complete rest.
- Ideal Weight CalculatorIdeal body weight by four published formulas.
- Pace CalculatorRunning pace, speed, and split times from distance and time.







