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Classic Wilks vs Wilks2 — What's the Difference?
Both formulas compare powerlifting strength fairly across different bodyweights. Classic Wilks (2004) uses a divisor of 500 with one set of polynomial coefficients. Wilks2 is an updated version with a divisor of 600 and revised coefficients that provide better accuracy at extreme bodyweights — both very light (under 50 kg) and very heavy (over 140 kg) lifters.
For most gym lifters in the 60–110 kg range, the difference between the two scores is typically less than 5 points. Choose Classic Wilks for historical comparison; choose Wilks2 if you're at an extreme bodyweight.
Wilks Score Reference
| Score | Level | Context |
|---|---|---|
| Under 200 | Beginner | New to powerlifting |
| 200–299 | Novice | Regular training, consistent progress |
| 300–399 | Intermediate | Strong gym lifter, competitive locally |
| 400–499 | Advanced | National-level strength |
| 500–599 | Elite | International competitive level |
| 600+ | World Class | Top 1% globally |
How to Improve Your Wilks Score
The fastest ways: increase your total by improving all three lifts (focus on your weakest first), stay at a competitive bodyweight for your class, and avoid extreme water cuts that reduce strength on meet day. A 10-point Wilks increase at the same bodyweight is pure strength progress.
Frequently Asked Questions
Under 300 = Beginner. 300–399 = Novice. 400–499 = Intermediate (strong gym lifter). 500–599 = Advanced (national level). 600+ = Elite/World Class. These apply equally to men and women since the Wilks formula already accounts for gender differences.
Classic Wilks (2004) is the original formula — widely used for historical comparison and still accepted in many federations. Wilks2 uses updated coefficients and a divisor of 600 instead of 500, improving accuracy for very light and very heavy lifters. For most people in the 60–110 kg range, the difference is under 5 points.
Yes — even 0.5 kg can change your Wilks coefficient and shift your score by 2–5 points. For competition purposes, always use your official weigh-in bodyweight. For tracking purposes, weigh yourself in the morning before eating for consistency.
Use whatever your federation requires for competition. For general gym tracking, Classic Wilks is more widely understood and allows comparison with historical records. Wilks2 is better if you're a very light or very heavy lifter. This calculator shows both so you can compare.
Wilks Score = Total (kg) × Wilks Coefficient. The coefficient comes from a 5th-degree polynomial equation using your bodyweight and gender. Men and women use completely different sets of coefficients. Classic Wilks uses a divisor of 500; Wilks2 uses 600 with updated coefficients.