What is Wilks Score?
Quick Definition
A legacy mathematical formula used to compare strength across weight classes.
The Wilks Score is a mathematical coefficient system developed by Robert Wilks in 1995. It was created to compare the lifting performance of powerlifters across different bodyweight classes and genders. Because lighter lifters can lift more weight relative to their size, and heavier lifters can lift more absolute weight, comparing them directly is unfair.
The Wilks formula solves this by multiplying a lifter's combined three-lift total (Squat + Bench Press + Deadlift) by a specific coefficient derived from a fifth-order polynomial equation. The coefficients differ for men and women, based on historical competition databases. For over two decades, the Wilks score was the global gold standard for determining the "Best Lifter" at powerlifting competitions.
In recent years, however, statistical analysis revealed that the Wilks formula exhibits bias, slightly favoring lifters at the extreme lightweight and super heavyweight ends of the spectrum. Consequently, many major federations have transitioned to newer formulas like DOTS or IPF GL points, though Wilks remains popular for historical comparisons..