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    One Rep Max for 415 lbs × 4 reps

    One Rep Max Calculator
    One Rep Max for
    lifted for
    reps

    What is the one rep max for 415 lbs × 4 reps?

    Answer

    Lifting 415 lbs for 4 reps gives an estimated one rep max of
    470.3 lbs

    A set of 4 reps at 415 lbs is

    88.2%

    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:

    415 × (1 + 4 ÷ 30)

    ≈

    415 × 1.1333

    ≈

    470.3 lbs

    Training Weights as a % of 1RM

    Percentages of your estimated max of 470.3 lbs, the way most strength programmes prescribe load:

    % of 1RMWorking Weight
    95%446.8 lbs
    90%423.3 lbs
    85%399.8 lbs
    80%376.3 lbs
    75%352.8 lbs
    70%329.2 lbs
    65%305.7 lbs
    60%282.2 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 415 lbs × 4 reps:

    FormulaEstimated 1RM
    Epley470.3 lbs
    Brzycki452.7 lbs
    Lombardi476.7 lbs
    O'Conner456.5 lbs
    Wathan470.5 lbs
    Lander458 lbs
    Mayhew483.5 lbs

    Related Calculations

    See Also

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    What is my 1 rep max for 415 lbs × 4 reps?. 415 lbs for 4 reps gives an estimated one rep max of 470.3 lbs. That set is 88.2% of your maximum — see the full rep table.
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    One Rep Max Table for 415 lbs

    RepsOne Rep Max% of 1RM
    2 reps442.7 lbs93.8%
    3 reps456.5 lbs90.9%
    4 reps470.3 lbs88.2%
    5 reps484.2 lbs85.7%
    6 reps498 lbs83.3%
    7 reps511.8 lbs81.1%
    8 reps525.7 lbs78.9%
    9 reps539.5 lbs76.9%
    10 reps553.3 lbs75%
    11 reps567.2 lbs73.2%
    12 reps581 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 415 lbs × 4 reps? (The answer is: 470.3 lbs). Enter the weight you lifted (e.g. 415), pick pounds or kilograms, and enter how many reps you managed (e.g. 4).
    Recalculate with different values ↑

    FAQ

    What is the one rep max for 415 lbs × 4 reps?

    Lifting 415 lbs for 4 reps gives an estimated one rep max of 470.3 lbs

    How much of my max is 415 lbs for 4 reps?

    415 lbs for 4 reps works out at 88.2% of an estimated one rep max of 470.3 lbs.

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

    90% of 470.3 lbs is 423.3 lbs and 70% is 329.2 lbs. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

    See Also