Use a recent working set to estimate one-rep max and practical training loads.
Keep in mind: Estimates become less reliable above 10 repetitions. Use safe technique, spotters and conservative loading.
Use a recent working set to estimate one-rep max and practical training loads. Enter your own values in the calculator above to receive an instant estimate. Your information stays in your browser and is not uploaded to our servers.
The result is an educational estimate based on the information you provide and the assumptions displayed on this page. Actual figures may differ because providers, regions, rounding methods, fees, laws, and individual circumstances vary.
Is this tool free?
Yes. It works without registration and can be used on phones, tablets, and desktop computers.
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