What Is a Wilks Score and How Is It Calculated?
The Wilks score (also called the Wilks coefficient) is a mathematical formula that adjusts a powerlifter's total weight lifted — the sum of their squat, bench press, and deadlift — for bodyweight, producing a single number that lets lifters of different sizes and sexes be compared fairly.
The Wilks formula, developed by Robert Wilks of Powerlifting Australia and first published in 1994, calculates a bodyweight-based coefficient: Coefficient = 500 ÷ (a + b·x + c·x² + d·x³ + e·x⁴ + f·x⁵), where x is bodyweight in kilograms and a through f are constants that differ for men and women. Your Wilks score is then Coefficient × Total lifted (kg).
In 2020, the International Powerlifting Federation (IPF) replaced Wilks with IPF GL Points as its official ranking formula, though Wilks remains the most widely used and recognized score outside sanctioned IPF competition, and this calculator supports both the original 1997/2004 coefficients and the recalculated 2020 update.
How to Use This Wilks Calculator
Enter your sex, bodyweight, and total lifted, and your Wilks score updates instantly. Here's what each field means:
- Sex: The Wilks formula uses different polynomial constants for men and women because strength-to-bodyweight ratios differ by sex.
- Bodyweight: Your bodyweight at the time of the lift, in kilograms or pounds. This calculator is accurate for bodyweights roughly between 30 kg (66 lb) and 250 kg (551 lb).
- Total lifted: The sum of your best competition-legal squat, bench press, and deadlift attempts — or enter a single lift if you only want to score one movement.
- Formula version: Choose Original (2004) for the classic, most widely cited coefficients, or Updated (2020) for improved accuracy at very light or very heavy bodyweights.
This calculator works in both kilograms and pounds — enter your numbers in whichever unit your gym or federation uses, and the conversion to the kilogram-based formula happens automatically.
What Your Wilks Score Means
A Wilks score above 400 is generally considered advanced, while scores above 500 place a lifter among an elite group recognized in national and international rankings. The table below shows commonly cited score bands used informally across the powerlifting community.
| Wilks Score | Level | Typical Description |
|---|---|---|
| Below 250 | Beginner | Early training age, still learning the competition lifts |
| 250 – 350 | Intermediate | Consistent training with solid technique on all three lifts |
| 350 – 450 | Advanced | Competitive at local and regional meets |
| 450 – 500 | National / Elite | Ranks well at national-level competition |
| 500+ | World Class | Among the strongest lifters in the world for their category |
Frequently Asked Questions
What is a good Wilks score?
A Wilks score around 300 is a reasonable target for an intermediate lifter, 350–400 is considered competitive at national-level open meets, and scores of 500 or higher are held by only a small number of the strongest raw and equipped lifters in the world.
How accurate is this Wilks calculator?
This calculator uses the published Wilks polynomial coefficients exactly as defined by Robert Wilks, so results match official federation Wilks tables. Accuracy decreases slightly at extreme bodyweights, which is why the 2020 revision exists — use it for lifters well outside the typical 50–140 kg range.
What is the difference between Wilks and IPF GL Points?
Wilks is an older bodyweight-adjustment formula from the 1990s that the IPF used as its official scoring system until 2020, when it switched to IPF GL Points, a newer formula recalculated from modern competition data. Wilks is still the most commonly used score in gyms, other federations, and casual strength comparisons.
How do I improve my Wilks score?
Increase your total (squat + bench + deadlift) through progressive overload while keeping bodyweight stable, since the score rewards strength relative to bodyweight rather than raw poundage alone. Many lifters also find their Wilks score rises when moving to a lower weight class without losing much total.