Wilks Score Calculator

What this calculator does

Compares raw strength across lifters of different bodyweights. A 60kg lifter totaling 300kg and a 120kg lifter totaling 400kg aren't equally strong relative to their size - the Wilks formula converts both into a single comparable number by applying a bodyweight-based coefficient to your total. It's the standard scoring method used in powerlifting to rank lifters across weight classes, and it also classifies your score into a rough strength tier (Beginner through Elite).

Formula used

Step 1 - Wilks coefficient, a fifth-degree polynomial of bodyweight x (in kg), using gender-specific constants a through f:

$$Coefficient = \frac{500}{a + bx + cx^2 + dx^3 + ex^4 + fx^5}$$

Step 2 - Wilks score

$$WilksScore = Total_{kg} \times Coefficient$$

Bodyweight is clamped to the formula's valid range (40-201.9kg for men, 40-154.53kg for women) before the coefficient is computed, since the polynomial becomes unreliable outside it.

How to use it

1. Enter your body weight.
2. Enter your total - typically the sum of your best Squat, Bench Press, and Deadlift attempts, though you can enter any single lift if you just want to score one movement.
3. Select your gender (the polynomial constants differ between men and women).
4. Select whether your numbers are in kilograms or pounds.
5. Submit to see your Wilks score, which strength tier it falls into, and a full breakdown of every tier's threshold.

Strength tiers

Level	Wilks Score
Beginner	below 200
Novice	200+
Intermediate	300+
Advanced	400+
Elite	500+

These tiers are a widely used community reference point, not an official federation standard - treat them as a rough guide to where your total stands rather than a strict classification.

Example

A 75kg male lifter with a 300kg total:

$$Coefficient \approx 0.7126$$ $$WilksScore = 300 \times 0.7126 \approx 213.8$$

That places him solidly in the Novice tier (200+) - a good illustration of why the formula matters: the same 300kg total from a 120kg lifter would score noticeably lower once their higher bodyweight lowers the coefficient, while a 60kg lifter with the same total would score much higher.

Notes

• Wilks 1994 coefficients are used here (the long-standing version still most widely referenced); the IPF has since adopted an updated formula (Wilks 2020 / IPF GL Points) for official competition use, so scores from other sources using the newer formula may differ slightly.
• This is a comparison tool, not a substitute for coached training progress - use it to track your own trend over time or compare across weight classes, not as a sole measure of lifting ability.