Wilks Calculator

What the Wilks calculator does

Who is stronger: a 60 kilogram lifter who totals 400 kilograms, or a 120 kilogram lifter who totals 600? In raw weight the heavier lifter wins, but pound for pound it is not so obvious, and that is the question the Wilks score was built to settle. This tool works it out. You give it a lifter's body weight and the weight they lifted, and it returns the Wilks score, a single number that lets lifters of any size be compared on a level footing. It shows the score for both the men's and women's formulas, so you use whichever fits the lifter.

In short, it converts a powerlifting total into a pound-for-pound strength rating, which is how meets crown a best lifter across different weight classes.

How to use it

1. Enter your body weight, in whatever unit you like.
2. Enter the weight lifted, usually your competition total, the sum of your best squat, bench press, and deadlift.

The tool returns a men's and a women's Wilks score. Read the one that matches the lifter, since the two sexes use different coefficients. Press Calculate for the result, or Reset to clear the fields.

How the Wilks score is worked out

Your Wilks score is your total multiplied by a coefficient that depends on your body weight:

Wilks score = weight lifted × coefficient(body weight)

That coefficient comes from a polynomial, a curve fitted to a lot of real competition data, and the key feature is that it is larger for lighter lifters and smaller for heavier ones. So a lighter lifter's total gets scaled up and a heavier lifter's gets scaled down, until the two land on the same footing. You do not need to touch the polynomial yourself, the calculator handles it, but that is the idea: a sliding handicap based on body weight.

Why the Wilks score exists

The reason a handicap is needed at all comes down to simple physics. Heavier lifters can carry more muscle, so they lift more in absolute terms. But lighter lifters are almost always stronger relative to their size, pound for pound, because of how strength scales with body mass and the shorter leverages smaller people work with. Left unadjusted, a strength contest would just reward whoever was biggest. The Wilks score corrects for that, so a featherweight and a heavyweight can be compared honestly, and it even lets male and female lifters be measured against the field through their separate formulas. Its main job in the sport is to pick the best lifter of a meet across all the weight classes, and it is just as handy for settling friendly pound-for-pound arguments in any gym.

An example with real numbers

Say a male lifter weighs 90 kilograms and puts up a 600 kilogram total.

• The men's coefficient for a 90 kilogram body weight works out to about 0.638
• Wilks score = 600 × 0.638, which is roughly 383

So this lifter scores about 383. If a much lighter lifter wanted to match that, they would need a smaller total, because their coefficient would be higher, and that is exactly the point: the score, not the raw total, is what puts them side by side.

What a good score is, and a note on newer formulas

As a rough guide for male lifters, a Wilks score around 300 marks a solid, experienced lifter, somewhere near 400 is advanced and approaching elite, and 500 or above is genuinely world-class, reached by only a handful of competitors. Women's tiers sit lower in raw number, since the formula is scaled separately, but mean the same thing relative to the field. Treat these as approximate, as they shift between federations and over time.

One honest point is worth making. This tool uses the original Wilks formula, the one that ran powerlifting for decades. In recent years the sport has moved on: the International Powerlifting Federation replaced Wilks with its own points system, now called IPF GL points, and other modern formulas such as DOTS and an updated Wilks have been built to handle the very lightest and heaviest lifters more fairly. So if you compete in a sanctioned meet, your official ranking will likely use one of those. The classic Wilks score remains, even so, the most widely recognized pound-for-pound number, the one most gym leaderboards and training logs still use, and the one with decades of history behind it for comparison.

Questions people ask

What is a Wilks score?

It is a number that compares the strength of powerlifters across different body weights. Your total is multiplied by a body-weight-based coefficient, so light and heavy lifters can be ranked pound for pound.

What is a good Wilks score?

For men, roughly 300 is a strong experienced lifter, around 400 is advanced and near elite, and 500 or more is world-class. Women's tiers are lower in number but mean the same relative to the field, and all of these vary by federation.

Why do lighter lifters get a higher coefficient?

Because they are typically stronger relative to their body weight. Heavier lifters move more weight in absolute terms, so the formula scales lighter lifters up and heavier lifters down to compare them fairly.

Is the Wilks score still used?

The original Wilks remains popular for gym leaderboards and historical comparison, but the International Powerlifting Federation now uses IPF GL points for official rankings, and newer formulas like DOTS exist too. This tool computes the classic Wilks score.

References

1. Vanderburgh, P. M., et al. (2020). Efficiency of the Wilks and IPF Formulas at Comparing Maximal Strength Across Body Masses (peer-reviewed evaluation of powerlifting scoring formulas). https://pmc.ncbi.nlm.nih.gov/articles/PMC7523908/
2. International Powerlifting Federation, IPF Points Proposal (background on the move from the Wilks coefficients to IPF scoring). https://www.powerlifting.sport/fileadmin/ipf/data/ipf-formula/IPF_Points_Proposal.pdf