One-Rep Max Calculator

Your Results

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Estimated 1 Rep Max
3 Reps
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5 Reps
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10 Reps
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About Your One-Rep Max

Your one-rep max (1RM) is the maximum amount of weight you can lift for a single repetition. This calculator estimates your 1RM based on your performance with submaximal weights.

For strength training, aim to train at 70-90% of your 1RM. Always use proper form and a spotter when attempting heavy lifts.

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