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Last updated: October 20, 2026

Have a question, found an error or want to suggest a feature? Send us a message with the form below and it will come straight to our inbox.

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    Before you write

    Is the calculator free?

    Yes. Every calculator on this site is free to use, with no account and no sign-up. Your saved progress is stored in your own browser, not on our server.

    Can you give me a personal training program?

    No. 1 Rep Max Calculator is a tool, not a coaching service, so we cannot write individual programs or give personal advice. For a plan built around you, please work with a qualified coach.