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    What Is This Tool?

    The One Rep Max Calculator estimates the heaviest weight you could lift once from a set of several reps.

    Privacy and Security

    The numbers you enter in the One Rep Max Calculator (weight lifted, repetitions and so on) are calculated in your browser. They are not sent to or saved on Adobe IQ servers, and they disappear when you close the page.

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    How to use this tool

    • Enter your weight lifted and repetitions.
    • Fill in the remaining fields of the One Rep Max Calculator.
    • Read your 1rm – epley (kg) and 1rm – brzycki (kg) instantly.

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    All Calculators

    One Rep Max Calculator

    Most accurate for sets of 10 reps or fewer.

    Result

    1RM – Epley (kg)
    116.67
    1RM – Brzycki (kg)
    112.5
    1RM – Lombardi (kg)
    117.46
    80% of 1RM for training (kg)
    93.33