Wilks Calculator
Compare powerlifting strength regardless of bodyweight and gender
Calculate Your Wilks Coefficient
Your current body weight
Your maximum lift (squat, bench, deadlift, or total)
Gender affects the Wilks coefficient calculation
Example: Elite Comparison
Female Champion
Body Weight: 48kg (106lbs)
Total Lift: 94kg (207lbs)
Wilks Score: 124.5
Level: Elite
Male Champion
Body Weight: 107kg (236lbs)
Total Lift: 208kg (459lbs)
Wilks Score: 123.5
Level: Elite
Result
Despite lifting less absolute weight, the female lifter has a higher Wilks score, making her objectively stronger relative to her bodyweight.
Wilks Performance Levels
Olympic Weight Classes
Men's Classes
Women's Classes
Understanding the Wilks Coefficient
What is the Wilks Coefficient?
The Wilks coefficient was developed by Robert Wilks to allow fair comparison of strength between powerlifters of different body weights and genders. It normalizes lifting performance by accounting for the natural advantages that come with different body sizes.
Why Use Wilks?
- •Compare lifters across different weight classes
- •Determine overall competition winners
- •Track relative strength progress
- •Set realistic strength goals
The Wilks Formula
Wilks = (Weight Lifted × 500) ÷ Denominator
Denominator = a + bx + cx² + dx³ + ex⁴ + fx⁵
- Weight Lifted: Maximum lift in kg
- x: Body weight in kg
- a, b, c, d, e, f: Gender-specific coefficients
Note: Different coefficients are used for male and female lifters to account for physiological differences in strength potential.