Wilks Calculator

The Wilks coefficient relies on advanced polynomial regression models tailored separately for male and female athletes. Because heavier lifters can generally move more absolute weight than lighter lifters due to biomechanical advantages, the formula applies a scaling factor. The general equation multiplies your total lifted weight (bench press, squat, and deadlift combined) by 500, then divides that product by a polynomial function of your body weight. For male lifters, the formula is expressed as Lift multiplied by 500 divided by (-216.0475 + 16.2606(BW) - 0.002388(BW)^2 - 0.001137(BW)^3 + 7.0186E-06(BW)^4 - 1.291E-08(BW)^5). Female lifters use a distinct coefficient curve to reflect physiological differences in mass distribution and muscular leverage.

Imagine a male powerlifter who weighs 80 kg and achieves a combined total lift of 480 kg across the squat, bench press, and deadlift. To find his Wilks score, we input his body weight into the male polynomial denominator, which yields a scaling coefficient divisor. For an 80 kg male, the denominator evaluates to roughly 356.5. We then multiply his 480 kg lift by 500, resulting in 240,000. Finally, dividing 240,000 by 356.5 gives a Wilks score of approximately 673.18. This standardized score allows him to fairly compare his lifting efficiency against athletes in completely different weight classes.

To ensure accurate comparisons, always weigh yourself under consistent conditions, such as first thing in the morning on an empty stomach. Make sure your lifting total strictly adheres to federation standards, meaning your squat, bench press, and deadlift attempts meet proper depth and lockout criteria. Avoid comparing Wilks scores across different eras of coefficient updates or alternative scoring systems like IPF points without understanding their distinct mathematical models.