Tools · PerformanceOne-Rep Max
One-Rep Max
Calculator
Enter a weight and the reps you hit with good form. Get an estimated 1RM and a load table so you can program every session as a percentage of your max.
Your set
lb
reps
Estimated 1-rep max
— lb
Training loads
This calculator is for educational purposes only and is not medical advice, diagnosis, or treatment. Results are estimates based on published formulas and population averages — your individual values may differ. Nothing here is calculated on a server: everything runs in your browser and no data is stored or sent anywhere. Always consult a qualified clinician before making health, medication, or training decisions.