Tool

Estimated one-rep max calculator

Estimate a planning number from a completed weighted set. It is not a tested maximum.

Enter a completed set

Enter a valid weight and 1–20 repetitions.

How the estimate works

Train Swole uses the Epley estimate: weight multiplied by one plus repetitions divided by thirty. For example, 100 kg for five estimates 116.7 kg. The result is a planning estimate, not a tested maximum or a guarantee.

Use a representative working set

Choose a recent completed set with external load and sound technique. Warm-ups, incomplete sets, planned values, and bodyweight-only movements do not belong in this calculation. Higher-repetition sets can be less precise, so compare trends from similar work rather than treating one number as absolute.

What the number is for

An estimate can help compare sessions or set conservative training percentages. It should not prescribe a max attempt, diagnose readiness, or replace a coach or qualified health professional.

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