Last updated: 2026-06-29

Why Powerlifting Needs a Scoring System

In powerlifting, heavier lifters can move more weight — but that doesn't make them stronger in any meaningful relative sense. A 100 kg lifter totaling 600 kg and a 60 kg lifter totaling 400 kg are both impressive; comparing them directly is comparing apples to oranges.

The Wilks score solves this by dividing your total by a bodyweight-dependent polynomial, producing a single dimensionless number that lets you compare performances across weight classes. Higher is better, and the same formula applies to everyone — so you can rank lifters against club records, historical performances, or your own previous meet results.

The Three Formulas

Wilks (1991)

Robert Wilks developed the original formula for the World Powerlifting Congress. It fits a 5th-degree polynomial to meet results, then divides:

$\text{Score} = \frac{500 \times \text{total}}{\sum_{k=0}^{5} c_k \cdot \text{BW}^k}$

The polynomial coefficients differ for male and female lifters. This formula was the global standard for decades and remains common in non-IPF federations.

Its main weakness: the polynomial was fitted to historical data that over-represented mid-range bodyweights, so it slightly over-rewards very light and very heavy lifters.

Wilks 2 (2020)

A recalibration using a much larger and more current dataset. Same polynomial structure, different coefficients, and a 600 multiplier instead of 500:

$\text{Score} = \frac{600 \times \text{total}}{\sum_{k=0}^{5} c_k \cdot \text{BW}^k}$

Wilks 2 scores are roughly 15–20% higher than Wilks 1 scores for the same performance (due to the multiplier change), and the polynomial is more evenly calibrated across weight classes. It's now preferred over the original wherever a polynomial-based formula is used.

IPF GL (Goodlift Points, 2019)

The International Powerlifting Federation adopted a fundamentally different approach in 2019: an exponential saturation curve rather than a polynomial:

$\text{Score} = \frac{100 \times \text{total}}{A - C \cdot e^{-b \cdot \text{BW}}}$

The exponential form avoids the endpoint bias that polynomial formulas struggle with — the curve asymptotes rather than bending back. Scores are designed so that an elite total in a given weight class scores close to 100 points, making cross-class comparison intuitive. If you compete in an IPF-affiliated federation, this is the official system.

Comparing Scoring Systems

All three normalize bodyweight, but they produce different absolute numbers. A Wilks score of 400 is not directly comparable to a Wilks 2 score of 400 or an IPF GL score of 400 — always specify the formula when sharing a score.

What Scores Mean in Practice

Using Wilks 1 as a rough reference:

Wilks 2 scores will be about 15–20% higher for the same absolute performance. IPF GL scores near 100 indicate elite performance in a given weight class.

Worked Example

Consider a male lifter weighing 83 kg with a powerlifting total of 600 kg (squat + bench press + deadlift).

Wilks (1991): Evaluating the male polynomial at BW = 83 kg gives a denominator of approximately 749.1, so the score is 500 × 600 / 749.1 ≈ 400.

Wilks 2 (2020): The updated polynomial at 83 kg yields approximately 748.5, giving 600 × 600 / 748.5 ≈ 481.

IPF GL: Using the male raw exponential (A = 1236.25, C = 1449.21, b = 0.01644), the denominator at 83 kg is 1236.25 − 1449.21 × e^(−0.01644 × 83) ≈ 866.0, giving 100 × 600 / 866.0 ≈ 69.

The same performance produces a score of 400 in Wilks, 481 in Wilks 2, and 69 in IPF GL — very different absolute numbers that cannot be compared across systems. Always specify the formula when sharing or recording a score.

What Wilks Doesn't Measure

Wilks and related scores measure relative total — the sum of your three best lifts divided by a bodyweight function. They do not reflect:

• Equipment differences: raw, single-ply, and multi-ply totals are not comparable even at the same Wilks score.
• Single-lift performance: a high total can come from any combination of squat, bench, and deadlift ratios.
• Body composition: two lifters at the same bodyweight can have very different muscle-to-fat ratios, affecting what the score means.
• Age: masters and juniors often use age-adjusted variants (like Malone-Meltzer or Masters Wilks) on top of the base score.

For most purposes — comparing yourself against your own history, comparing with training partners, or reading meet results — Wilks and IPF GL provide a useful single-number summary of relative strength.