Free tool

Estimate your 1RM

Fill in one set. You get an estimate of the most you could lift once.

How many more reps could you have done? Leave empty if you don't know.

Estimated 1RM

Fill in the fields to see the result.

An estimate (Epley, rounded to 2.5 kg), not a measurement. 11–12 reps give a rough estimate; above 12 reps there is no estimate.

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1RM calculator | Lemycu