MariposasWilks Calculator
By Zachary, builder of Mariposas · Reviewed against published exercise-science sources (references)
· Last updated June 2026
Strength Wilks is the legacy standard; DOTS is the modern equivalent.
The Wilks score lets lifters of different body weights compare strength on a level field. Enter your sex, body weight and total (squat + bench + deadlift). Note: Wilks is the legacy formula, DOTS is the modern standard.
How it works
The Wilks score applies a polynomial correction factor to a lifter's total (the combined one-rep maxes from squat, bench press, and deadlift) so that the resulting number can be compared across body weights. The formula divides the total by a denominator derived from a fifth-degree polynomial equation whose coefficients differ for males and females. Those coefficients were derived statistically from competitive powerlifting data accumulated through the IPF, with the goal of modeling how strength scales with body mass across the realistic range of competitive lifters. The output is a unitless coefficient, typically falling somewhere between 200 and 600 for competitive athletes, where higher numbers indicate greater strength relative to body size. Because the polynomial was fit to data from a specific era of the sport, it has a known tendency to slightly favor lighter and heavier lifters at the extremes of the weight distribution, which is exactly why the IPF officially replaced it with the DOTS formula in 2020.
When to use it
Wilks is most relevant if you're reviewing historical powerlifting records, comparing meet results from before 2020, or competing in a federation that still uses it as the official coefficient. It also shows up constantly in online lifting communities as a rough shorthand for 'how strong is this person relative to their size,' so knowing your number helps you contextualize meet results or training totals against a massive archive of historical lifters. If you're planning to compete under current IPF or IPF-affiliated rules, check which coefficient your federation scores, because DOTS is the live standard there.
Worked example
Say a male lifter weighs 83 kg and posts a 200 kg squat, a 130 kg bench, and a 240 kg deadlift, giving a 570 kg total. Plugging those numbers in, the Wilks formula produces a score in the low 380s. That puts him solidly in the range of a serious intermediate-to-advanced recreational competitor but well below the elite threshold, where national-level lifters at that body weight often push past 450. Now compare him to a 59 kg female lifter who totals 370 kg: her Wilks score would land around 420, meaning the formula judges her relatively stronger for her size despite the lower absolute total, which is the whole point of the coefficient.
Tips for an accurate result
- Use your competition total, not your gym maxes. Wilks is calibrated around maximal single-rep efforts performed under meet conditions, and inflated training numbers will distort the comparison.
- Enter body weight as your weigh-in weight, not your off-season or morning-of weight. A 2 kg water cut before weigh-in matters more at lighter classes.
- Remember the formula has separate coefficient sets for males and females, so selecting the correct sex field is not optional. Entering the wrong option produces a meaningfully different and incorrect score.
- If you're comparing your score to historical records or all-time lists, confirm those records also used raw totals if you lift raw. Equipped totals routinely run 20 to 40 percent higher and are not comparable to raw numbers under the same coefficient.
- For a current apples-to-apples comparison with active competitors, also calculate your DOTS score and use that as the primary benchmark, treating your Wilks number as historical context.
Formula & sources: methodology · references.
Now go hit the number Mariposas turns every workout, run and class into progress · collect a cute pet 🐾FAQ
- What is a good Wilks score?
- Context matters a lot here. In recreational lifting circles, scores around 300 to 350 are commonly associated with a committed hobbyist who trains consistently. Competitive club-level lifters often cluster between 350 and 425. Scores above 450 show up at national and international levels, and scores above 500 are genuinely elite. These are rough landmarks, not hard thresholds, and they shift somewhat depending on weight class.
- Why did the IPF stop using Wilks?
- The polynomial in the Wilks formula was fit to older competition data, and over time it became clear that it produced slightly uneven corrections at the lighter and heavier ends of the weight spectrum. Lighter lifters, particularly in the sub-59 kg classes, tended to score higher than their actual competitive dominance suggested, and the heavyweights faced a similar distortion in the other direction. DOTS was introduced specifically to address those edge-case biases with a more evenly distributed correction curve.
- Can I use Wilks to compare raw and equipped lifting?
- Not meaningfully. Equipped lifting uses supportive gear that adds substantially to squat and deadlift numbers, so a raw total and an equipped total fed into the same Wilks formula will produce scores that reflect gear advantage as much as the lifter's actual strength. Keep comparisons within the same equipment category.
- Does Wilks work for powerlifting totals only, or can I use it for individual lifts?
- The formula was designed around the three-lift total, but you will find people applying it to a single-lift number, like a bench-only total, for within-sport comparisons. That works as a rough relative measure as long as everyone you are comparing used the same lift, but it is not what the formula was built to do and the results carry a wider margin of error.
- My Wilks score went down even though my total went up. Is that a mistake?
- No, it is the formula doing its job. If your body weight increased alongside your total, the denominator in the equation grew too. The polynomial correction grows faster than a linear relationship with body mass, so gaining 10 kg of body weight while adding 15 kg to your total can produce a lower coefficient even though you are absolutely stronger. This is actually a useful signal that your strength-to-mass ratio shifted, not just your raw strength.