Reference calculator
Wilks Calculator
Wilks scores how strong you are for your bodyweight on one scale. This page runs two versions: the first Wilks from 1994, and the Wilks 2 redo from 2020. Many federations still list records in Wilks, even after the IPF moved on to DOTS, then IPF GL.
The formula
Wilks runs your bodyweight (in kg) through a fifth-degree polynomial, a long math curve, then multiplies the result by your total. The numbers in the curve change with the version and your sex:
coefficient = 500 / (A + B·x + C·x² + D·x³ + E·x⁴ + F·x⁵)
Wilks = total × coefficientWilks 1 (1994), male:
-216.0475144, 16.2606339, -0.002388645, -0.00113732, 7.01863e-6, -1.291e-8Wilks 1 (1994), female:
594.31747775582, -27.23842536447, 0.82112226871, -0.00930733913, 4.731582e-5, -9.054e-8Wilks 2 (2020), male:
47.4617885411949, 8.47206137941125, 0.073694103462609, -0.00139583381094385, 7.07665973070743e-6, -1.20804336482315e-8Wilks 2 (2020), female:
-125.4255398, 13.71219419, -0.03307250631, -0.001050400051, 9.38773e-6, -2.3334613e-8Wilks 1 vs. Wilks 2
The first Wilks from 1994 read a bit off. It was kind to very heavy lifters and hard on very light ones. Robert Wilks fixed this in 2020 with a bigger, newer pool of lifters. Most federations now post both versions, plus DOTS or IPF GL for new rankings.
Why this still matters
Federation records from the 1990s through the mid-2010s are in Wilks 1 points. To match an old record or ranking, Wilks 1 is the one you want. A 2021 or later record may be Wilks 2, DOTS, or IPF GL. It depends on the federation.
Track this in Kinoku
The Strength Standards feature scores Wilks 2 next to DOTS, IPF GL, and FFMI from your training record. Wilks 1 stays on this web page so you can look up old federation records that used the 1994 formula. The app sticks to Wilks 2, the version federations rank in today. The DOTS calculator covers the newer score.