Wilks Score Calculator
Calculate your Wilks score to compare powerlifting strength across different body weights. Enter values for instant results with step-by-step formulas.
Formula
Wilks = Total(kg) × 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵)
The Wilks Score multiplies your powerlifting total (in kg) by a body weight-dependent coefficient. The coefficient is calculated using a 5th-degree polynomial with gender-specific constants, where x is body weight in kg. Higher coefficients are assigned to lighter lifters to normalize strength across weight classes.
Worked Examples
Example 1: Intermediate Male Lifter
Problem: 180-lb male lifter: Squat 315, Bench 225, Deadlift 405. What's the Wilks Score?
Solution: Body weight: 180 lbs = 81.6 kg\nTotal: 315 + 225 + 405 = 945 lbs = 428.6 kg\nWilks coefficient for 81.6 kg male: ~0.6870\nWilks Score = 428.6 × 0.6870 = 294.5\nLevel: Intermediate — solid foundation!
Result: Wilks Score: 294.5 | Level: Intermediate
Example 2: Competitive Female Lifter
Problem: 135-lb female: Squat 225, Bench 135, Deadlift 275. What's the Wilks Score?
Solution: Body weight: 135 lbs = 61.2 kg\nTotal: 225 + 135 + 275 = 635 lbs = 288.0 kg\nWilks coefficient for 61.2 kg female: ~1.2350\nWilks Score = 288.0 × 1.235 = 355.7\nLevel: Advanced — competitive at local meets!
Result: Wilks Score: 355.7 | Level: Advanced
Frequently Asked Questions
What is the Wilks Score?
The Wilks Score (or Wilks Coefficient) is a formula used in powerlifting to compare lifters across different body weight classes. It normalizes your powerlifting total (squat + bench press + deadlift) relative to your body weight using a polynomial equation. A 300 Wilks is considered good, 400 is elite, and 500+ puts you among the best in the world. The formula was developed by Robert Wilks and has been used by the International Powerlifting Federation (IPF) since the 1990s to determine the best lifter in competitions.
How does the Wilks formula work?
The Wilks formula uses a 5th-degree polynomial to calculate a coefficient based on body weight: Coeff = 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵), where x is body weight in kg and a-f are gender-specific constants. Your Wilks Score = Total(kg) × Coefficient. The formula gives lighter lifters a higher coefficient to compensate for the biomechanical advantages heavier lifters have. This allows a 132-lb lifter to be fairly compared against a 308-lb lifter.
Wilks vs DOTS vs IPF GL — which is better?
The Wilks formula has been the standard since the 1990s but has criticism for overvaluing heavier lifters. DOTS (Dynamic Objective Team Scoring) was introduced as an alternative that better normalizes across weight classes and is gaining popularity. IPF GL Points (Goodlift Points) is the official scoring system adopted by the IPF in 2019, replacing Wilks for their competitions. Wilks remains the most widely recognized and is still used by many federations. For personal tracking, any system works — just be consistent.
How do I improve my Wilks Score?
There are two ways to improve your Wilks: increase your total or decrease your body weight (the formula favors lighter lifters pound-for-pound). The most sustainable approach is increasing your total through progressive overload, periodized programming, and addressing weak points. Common strategies: if your bench is lagging, add bench accessories. If your deadlift stalls, work on hip hinge and grip strength. Don't neglect technique — proper form often unlocks 10-20 lbs instantly. Cutting weight only helps if you can maintain your total; losing muscle defeats the purpose.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.
Is Wilks Score Calculator free to use?
Yes, completely free with no sign-up required. All calculators on NovaCalculator are free to use without registration, subscription, or payment.