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    One Rep Max for 345 lbs × 12 reps

    One Rep Max Calculator
    One Rep Max for
    lifted for
    reps

    What is the one rep max for 345 lbs × 12 reps?

    Answer

    Lifting 345 lbs for 12 reps gives an estimated one rep max of
    483 lbs

    A set of 12 reps at 345 lbs is

    71.4%

    of your estimated one rep max

    Note: this is an estimate, not a tested max. Rep-based formulas are closest at 2–6 reps and drift further apart as the set gets longer. Warm up and use a spotter before attempting a true single.

    How to Calculate One Rep Max

    Epley Formula: 1RM = weight × (1 + reps ÷ 30)

    The Epley formula assumes that every extra repetition you can complete corresponds to roughly 3.33% more weight on the bar. Put your set into it:

    345 × (1 + 12 ÷ 30)

    =

    345 × 1.4

    =

    483 lbs

    Training Weights as a % of 1RM

    Percentages of your estimated max of 483 lbs, the way most strength programmes prescribe load:

    % of 1RMWorking Weight
    95%458.8 lbs
    90%434.7 lbs
    85%410.5 lbs
    80%386.4 lbs
    75%362.2 lbs
    70%338.1 lbs
    65%314 lbs
    60%289.8 lbs

    Other One Rep Max Formulas

    Published 1RM formulas disagree, and the gap widens with the rep count. This page answers with Epley; here is what the others give for 345 lbs × 12 reps:

    FormulaEstimated 1RM
    Epley483 lbs
    Brzycki496.8 lbs
    Lombardi442.3 lbs
    O'Conner448.5 lbs
    Wathan489.9 lbs
    Lander498.2 lbs
    Mayhew467.1 lbs

    Related Calculations

    See Also

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    What is my 1 rep max for 345 lbs × 12 reps?. 345 lbs for 12 reps gives an estimated one rep max of 483 lbs. That set is 71.4% of your maximum — see the full rep table.
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    One Rep Max Table for 345 lbs

    RepsOne Rep Max% of 1RM
    2 reps368 lbs93.8%
    3 reps379.5 lbs90.9%
    4 reps391 lbs88.2%
    5 reps402.5 lbs85.7%
    6 reps414 lbs83.3%
    7 reps425.5 lbs81.1%
    8 reps437 lbs78.9%
    9 reps448.5 lbs76.9%
    10 reps460 lbs75%
    11 reps471.5 lbs73.2%
    12 reps483 lbs71.4%

    One Rep Max Calculator

    This calculator estimates your one-rep max (1RM) — the heaviest weight you could lift for a single repetition — from a set you have already completed. For example, it can help you find out what is the one rep max for 345 lbs × 12 reps? (The answer is: 483 lbs). Enter the weight you lifted (e.g. 345), pick pounds or kilograms, and enter how many reps you managed (e.g. 12).
    One Rep Max Calculator
    One Rep Max for
    lifted for
    reps

    FAQ

    What is the one rep max for 345 lbs × 12 reps?

    Lifting 345 lbs for 12 reps gives an estimated one rep max of 483 lbs

    How much of my max is 345 lbs for 12 reps?

    345 lbs for 12 reps works out at 71.4% of an estimated one rep max of 483 lbs.

    What should I lift at 90% and 70% of that max?

    90% of 483 lbs is 434.7 lbs and 70% is 338.1 lbs. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

    See Also