Wilks Calculator
Compare powerlifting strength across body weights and sexes using the official Wilks coefficient formula.
Wilks Calculator
The Wilks Calculator estimates your powerlifting strength using the official Wilks coefficient. It lets you compare lifters across different body weights and sexes by normalizing total lifted weight to a single score.
The Wilks Formula
Wilks = (lifted weight × 500) / (a + bx + cx² + dx³ + ex⁴ + fx⁵), where x is body weight in kilograms and the coefficients differ for men and women. A higher Wilks score indicates greater relative strength.
Comparing Lifters
Enable the comparison mode to evaluate two lifters side by side. A lighter lifter who totals less weight can still score higher if their Wilks coefficient is greater.
Frequently Asked Questions
What is the Wilks coefficient?
The Wilks coefficient normalizes powerlifting totals by body weight and sex, making it possible to compare athletes in different weight classes.
What weight should I enter?
Enter your competition body weight and your powerlifting total, the sum of your best squat, bench press, and deadlift in kilograms or pounds.
Are male and female coefficients different?
Yes. The Wilks formula uses sex-specific polynomial coefficients to account for physiological differences between male and female lifters.
What is a good Wilks score?
Scores above 400 are elite for men, while scores above 300 are strong for women. Use the comparison mode to see how two lifters rank against each other.
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