The Wilks Formula Calculator is a sophisticated tool designed for the powerlifting community to level the playing field among competitors of varying body weights. By calculating a Wilks Score, this tool allows lifters to gauge their strength relative to others regardless of weight class, making it an indispensable asset for both training and competition.
Understanding the Wilks Formula
The Wilks Formula is used to calculate a coefficient that adjusts a lifter’s total weight lifted according to their body weight. This adjustment provides a way to fairly compare the strength of powerlifters who weigh different amounts.
Formula and Inputs Required
Inputs:
- Total Weight Lifted (L): The combined weight of the lifter’s best squat, bench press, and deadlift.
- Body Weight of the Lifter (bw): The body weight of the lifter in kilograms.
- Gender: Determines the set of coefficients used in the formula.
Wilks Coefficient Calculation: For each gender, the formula uses a polynomial equation where the coefficients differ:
- Men:πΆππππππππππ‘=500π+ππ₯+ππ₯2+ππ₯3+ππ₯4+ππ₯5Coefficient=a+bx+cx2+dx3+ex4+fx5500β
- Women:πΆππππππππππ‘=500π+βπ₯+ππ₯2+ππ₯3+ππ₯4+ππ₯5Coefficient=g+hx+ix2+jx3+kx4+lx5500β
Where π₯x is the body weight of the lifter.
Coefficients:
- Men’s Coefficients: a = -216.0475144, b = 16.2606339, c = -0.002388645, d = -0.00113732, e = 7.01863E-06, f = -1.291E-08
- Women’s Coefficients: g = 594.31747775582, h = -27.23842536447, i = 0.82112226871, j = -0.00930733913, k = 4.731582E-05, l = -9.054E-08
Step-by-Step Example
Example Calculation for a Male Lifter:
- Body Weight: 90 kg
- Total Weight Lifted: 700 kg
- Calculate the Coefficient: Using the male coefficients, substitute π₯=90x=90 into the formula:πΆππππππππππ‘=500β216.0475144+16.2606339Γ90β0.002388645Γ902β…Coefficient=β216.0475144+16.2606339Γ90β0.002388645Γ902β…500β
- Compute the Wilks Score:πππππ πππππ=πΆππππππππππ‘Γ700WilksScore=CoefficientΓ700This result is the lifterβs Wilks Score, reflecting their strength adjusted for body weight.
Relevant Information Table
| Parameter | Description | Example Value |
|---|---|---|
| Total Weight Lifted (L) | Combined best lifts | 700 kg |
| Body Weight (bw) | Weight of the lifter | 90 kg |
| Gender | Male or Female | Male |
| Coefficient | Calculated using Wilks formula | Computed value |
| Wilks Score | Adjusted strength score | Computed value |
Conclusion:
The Wilks Formula Calculator is not just a tool for measuring strength; it’s a critical component for fair competition in powerlifting. By equating lifters of different sizes, it ensures that achievements in strength are recognized regardless of an individualβs weight class. This tool is used extensively in both training and competitive settings to help athletes track performance improvements and set realistic, weight-adjusted goals. It exemplifies how data and mathematics are integral to sports science, enhancing both the fairness and excitement of powerlifting competitions.