Wilks Score Calculator

Normalize your powerlifting total across bodyweight and gender with the classic Wilks formula.

Calculator
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Understanding the Wilks Formula

The Wilks formula was developed by Robert Wilks in 1994 to compare powerlifters of different bodyweights on a single scale. It uses a fifth-order polynomial fit to historical performance data, producing a coefficient that adjusts your total.

The Formula

Coefficient = 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵)
Where x = bodyweight (kg)
Wilks Score = Total (kg) × Coefficient

Wilks Score Categories

CategoryWilks Range
BeginnerUnder 100
Novice100-199
Intermediate200-299
Advanced300-399
Elite400-499
World Class500+

When Wilks Falls Short

Wilks has known biases: it tends to favor mid-heavyweight lifters and undervalue performance at the weight extremes. Modern alternatives like DOTS and IPF GL points address these issues. Serious competitive lifters often calculate all three.

About the Calculation

This tool uses the original 1994 Wilks coefficients. The 2020 "Wilks 2" update uses revised numbers but has seen limited federation adoption. If you're preparing for a specific meet, check which formula your federation uses.

Frequently Asked Questions