Free Wilks calculator for powerlifting. Calculate your relative strength score based on body weight, squat, bench press, and deadlift totals using Wilks and Wilks-2 formulas.
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The Wilks coefficient is the original standard for comparing powerlifting performance across different body weights and genders. Enter your squat, bench press, and deadlift to calculate your Wilks score and see how you compare to lifters worldwide.
The Wilks coefficient was developed by Robert Wilks and has been used in powerlifting since 1994. It uses a 5th-degree polynomial equation with gender-specific coefficients to normalize strength across body weights. The original formula was updated in 2020 (Wilks-2) with recalibrated coefficients based on modern competition data.
Wilks Formula
Wilks = Total × Coeff, where Coeff = 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵)Wilks has been the benchmark for powerlifting comparison for nearly 30 years.
Fair comparison between lifters of vastly different body weights.
Separate coefficients allow meaningful comparison between male and female lifters.
Monitor your relative strength as body weight changes over your lifting career.
Compare scores with lifters from before 2019 when IPF used Wilks.
Some federations still use Wilks as their official scoring system.
Track your relative strength improvement over years of training.
Set classification targets: Class I (400+), Master (450+), Elite (500+).
Sub-Elite: under 300, Class III: 300-350, Class II: 350-400, Class I: 400-450, Master: 450-500, Elite: 500-550, World Class: 550+. Most competitive lifters aim for 400+ to be considered advanced.
Wilks-2 (2020) updated the original coefficients using modern competition data. It addresses criticisms that the original favored certain weight classes. Wilks-2 uses 600 as the base instead of 500 and has recalibrated polynomial coefficients.
DOTS is the current IPF standard (since 2019) and is considered more balanced across weight classes. Wilks is still valid for historical comparisons and federations that haven't switched. Both are useful measures of relative strength.
The original Wilks formula has been criticized for favoring very light and very heavy lifters at the extremes. Wilks-2 attempted to address this, though debates continue. Most criticism applies to extreme weight classes (under 52kg or over 120kg).