Wilks score calculator
Calculate your Wilks coefficient to compare powerlifting strength across different bodyweights.
Your lifts
Enter your lifts to calculate your Wilks score.
About the Wilks formula
The Wilks coefficient is a formula used in powerlifting to compare lifters of different bodyweights on a level playing field. It was developed by Robert Wilks and was the standard in competitive powerlifting for decades.
How it works
Your total (squat + bench + deadlift) is multiplied by a coefficient based on your bodyweight and gender. This allows a 60kg lifter to be fairly compared against a 120kg lifter.
Wilks vs Wilks 2
Wilks 2 (also called Wilks 2020) is an updated formula that better accounts for modern powerlifting data. Some federations have switched to Wilks 2, while others still use the original.
Formula
Wilks = Total * 500 / (a + b*x + c*x^2 + d*x^3 + e*x^4 + f*x^5)where x = bodyweight in kg, and a-f are gender-specific polynomial coefficients.
Vanderburgh, P.M. & Batterham, A.M. (1999). Validation of the Wilks powerlifting formula. Medicine and Science in Sports and Exercise, 31(12), 1869-1875. The Wilks 2 coefficients were updated by Robert Wilks in 2020 using IPF competition data.
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