One-rep max
Six rep-max formulas, side by side, plus their median as the consensus. Formulas drift more the higher the rep count runs - treat anything past 8-10 reps as a soft estimate.
Plate loading
Women's bar and metric-no-45 are always kg, regardless of the unit toggle above.
Format: SIZExCOUNT pairs separated by commas, e.g. "45x4,25x1,10x2,5x2,2.5x1" - four 45s, one 25, two 10s, two 5s, one 2.5 available per side.
Strength score
Wilks (2020 + original), DOTS, and IPF GL points, shown side by side rather than picked as one "correct" answer - they're fit to slightly different samples and disagree at the extremes.
World records
Powerlifting records are computed from the OpenPowerlifting database (all-time = heaviest sanctioned lift in any federation; tested = drug-tested meets only). Strongman and grip records are hand-curated with a citation per entry. A bundled snapshot can trail the current record.
Track & field records
World records (World Athletics), US collegiate records, and US national high-school records, hand-curated with a citation per entry. Levels aren't directly comparable - high-school throws use lighter implements, noted per record.
Unit convert
Plain lb ↔ kg, using the exact international avoirdupois pound (1 lb = 0.45359237 kg) - no rounded approximation.