One-rep max calculator
Estimate a lift from a technically consistent set of 1 to 12 reps and view percentage-based training weights.
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Run a quick strength estimate, compare training volume, or start a workout log. Each tool explains its formula and limitation, and none requires an account.
Estimate a lift from a technically consistent set of 1 to 12 reps and view percentage-based training weights.
Open toolCalculate sets × reps × load for a set, a session, and a repeated weekly training pattern.
Open toolDownload a clean CSV with fields for exercises, sets, load, reps, effort, set type, and notes.
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A single number cannot show whether your technique, range, effort, and recovery stayed comparable. Keep the inputs beside the result so you can judge changes in context.