Wilks Score Calculator
Calculate your Wilks Score to compare powerlifting strength across weight classes. Enter your squat, bench press, and deadlift to see your competition
Wilks Score Calculator
Calculator
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Formula: Wilks = Total(kg) × 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵)
Worked example — Wilks Score: 289.0 | Level: Intermediate
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 Total: 315 + 225 + 405 = 945 lbs = 428.6 kg Wilks coefficient for 81.6 kg male: ~0.6744 Wilks Score = 428.6 × 0.6744 = 289.0 Level: Intermediate — solid foundation!
Result:Wilks Score: 289.0 | 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 Total: 225 + 135 + 275 = 635 lbs = 288.0 kg Wilks coefficient for 61.2 kg female: ~1.0980 Wilks Score = 288.0 × 1.098 = 316.2 Level: Advanced — competitive at local meets!
Result:Wilks Score: 316.2 | 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.
Why does the Wilks coefficient get smaller as body weight rises?
Because absolute strength does not scale in direct proportion to body mass. Muscle force depends roughly on cross-sectional area, which grows more slowly than volume and therefore more slowly than weight, so a lifter twice as heavy is not twice as strong. The fifth-degree polynomial in the denominator captures that curve empirically from competition data, and dividing 500 by it produces a coefficient that falls steadily as mass rises: with the male constants used here it runs near 1.02 at 50 kg, about 0.67 at 82 kg and about 0.58 at 120 kg. That is what lets a 60 kg and a 120 kg lifter be ranked on the same scale.
Does the calculator need my lifts in kilograms?
The Wilks polynomial is defined with body weight in kilograms, so everything must be converted before the coefficient is applied. When you choose pounds, the calculator multiplies both your body weight and each of the three lifts by 0.453592 first, then computes the coefficient from the kilogram body weight and multiplies it by the kilogram total. Feeding pound figures straight into the formula would evaluate the polynomial at the wrong point on the curve and inflate the score badly, so never mix units between body weight and lifts.
Can I calculate a Wilks score for the bench press alone?
Yes, mechanically: multiply the single lift in kilograms by the same body-weight coefficient, which is what the per-lift breakdown on this page shows. Bench-only competitions score exactly that way. What you cannot do is compare a single-lift figure with the familiar full-power benchmarks, because those thresholds were calibrated against three-lift totals and a bench-only score will naturally land far lower. Compare bench Wilks against other bench Wilks, and squat against squat, or the classification will be meaningless.
What changed in the 2020 revision of the Wilks formula?
The original coefficients were fitted to competition results from the early 1990s, and the lifting population has changed since then, particularly at the extremes of body weight where critics argued the curve no longer matched real performance. The author published revised coefficients that refit the same polynomial structure to a more recent dataset. Because the fitted constants differ, scores from the two versions are not interchangeable, so always check which version a ranking list or gym calculator uses before comparing numbers with a training partner.
Does the Wilks score account for supportive equipment such as a bench shirt or knee wraps?
No. The coefficient depends only on body weight and sex, so a raw total and an equipped total are pushed through exactly the same multiplier even though a squat suit, bench shirt or stiff knee wraps can add a substantial amount to the squat and bench. Federations handle this by ranking raw, single-ply and multi-ply lifters in separate divisions. Compare your score only against lifters in the same equipment class, and note which division any published Wilks figure came from.
Will cutting weight before a meet raise my Wilks score?
It works in two directions at once. Dropping body weight raises the coefficient, but an aggressive cut, especially one relying on dehydration in the final days, usually shaves kilograms off the total as well. The score only improves if the coefficient gain outweighs the strength loss, and that depends on how much of the cut is water and glycogen versus genuine tissue. The practical test is to enter both scenarios here: your current weight and total, then your target weight with a realistically reduced total.
References
Reviewed for accuracy by Sher, Sports Science & Nutrition Specialist · Editorial policy
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