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Free lifting calculators

Web versions of the calculators in our iOS Calculator app. Same math, available anywhere, no ads.

One-rep max calculator

Estimate your 1RM from any rep set using six standard formulas.

Visual barbell loader with competition-color plates and a custom plate inventory.

Find the right weight for a given rep and RPE target using the Tuchscherer chart.

Compute your training max for 5/3/1, BBB, and similar programs, with a working-weights chart.

All three modern powerlifting scoring formulas side by side, with tier benchmarks.