Wilks vs DOTS vs IPF GL vs Wilks 2.0: which powerlifting score should you use?

Powerlifting has spent the last thirty years arguing about the same problem: how do you compare a 60 kg lifter to a 110 kg lifter fairly? Absolute total favours the big lifter. Relative-to-bodyweight favours the small one. Every “best lifter” award in the sport rests on whichever coefficient the federation decided to use that year. There are now four formulas in active circulation — Wilks, DOTS, IPF GL, Wilks 2.0 — and the same total can score very differently across them. This guide unpacks the differences and tells you which one is actually meaningful for you, depending on what you lift, where you compete, and what you’re trying to track.

---

The problem all four formulas try to solve

Strength scales with bodyweight, but not linearly. A 110 kg lifter is not 83% stronger than a 60 kg lifter just because their bodyweight is 83% greater. The relationship is closer to a 2/3 power scaling — sometimes called allometric scaling — which traces back to how cross-sectional muscle area grows relative to body mass. A small lifter can produce more force per kilogram of bodyweight than a heavyweight; a heavyweight can produce more absolute force.

Every powerlifting coefficient tries to fit a curve to this relationship using meet data. The differences come down to which meet data, which curve, and whether the formula was retired and replaced when it started misbehaving at the tails.

---

The four formulas, briefly

Wilks (1994)

Robert Wilks built the original coefficient from late-1980s and early-1990s meet data. It dominated the sport for two decades and is still the score you’ll see quoted on most legacy PR lists. The formula fits a polynomial to bodyweight and divides total by the result.

Where it goes wrong: Wilks over-rewards lifters at both bodyweight extremes — the very small and the very large. By the late 2010s, this was bending best-lifter awards toward 52 kg women and 140+ kg men in ways that the broader competitive community didn’t accept as fair.

DOTS (2019)

Tim Konertz published DOTS — Dynamic Objective Team Scoring — using a decade of more recent IPF meet data. It’s a fifth-order polynomial, recalibrated for both sexes, and it solves the tail problem that killed Wilks. DOTS replaced Wilks as the official scoring formula for raw powerlifting in most non-IPF federations (USAPL, USPA, WRPF, and others). It’s now the default for “best lifter” awards in raw competition.

IPF GL (2020)

The IPF kept its own house. After deprecating Wilks the same year DOTS appeared, the federation rolled its own coefficient — IPF GoodLift — fit specifically to IPF meet data. It exists in parallel to DOTS and is calibrated separately for raw and equipped (knee wraps, bench shirts, squat suits). IPF GL is the score you’ll see at any IPF-affiliated meet.

The output scale is different from DOTS. IPF GL produces a score in the 0–100 range, where 100 represents a world-record-level lift. DOTS produces a score in the 200–600 range, where ~500 is world class. The two formulas mostly agree on rank order, but the numbers are not interchangeable.

Wilks 2.0 (2020)

Robert Wilks himself published a refitted version of his original formula in 2020, using newer meet data. Wilks 2.0 addresses the tail problem of the original but never got federation adoption — by the time it came out, DOTS and IPF GL had already taken the seats. You’ll see it referenced on a handful of calculators and old-school strength forums; you won’t see it on a meet sheet.

---

Worked example: same lifter, four scores

Here’s the same male lifter at three different bodyweights, totalling enough to land mid-Intermediate on each formula. The numbers are illustrative — plug your own into the DOTS calculator for an exact read.

Bodyweight	Total	DOTS	Wilks	Wilks 2.0	IPF GL (raw)
75 kg / 165 lb	550 kg / 1213 lb	~400	~395	~395	~80
90 kg / 198 lb	620 kg / 1367 lb	~395	~398	~393	~79
110 kg / 242 lb	700 kg / 1543 lb	~395	~408	~390	~78

Two things to notice:

1. DOTS, Wilks 2.0, and IPF GL agree closely in the middle of the bodyweight range. This is by design — they’re all fit to recent data and they converge in the part of the curve where most lifters actually compete.
2. Original Wilks drifts upward at heavier bodyweights. That same lifter scores ~408 on Wilks at 110 kg but only ~395 on DOTS. Multiply that gap across a meet roster and you can see why federations switched: best lifter awards on Wilks systematically favoured the heavier weight classes.

For female lifters the divergence is sharper in the opposite direction — original Wilks over-rewarded very light women (47–52 kg). DOTS and IPF GL flatten that.

---

Which one should you actually use?

Depends on three things: where you compete, what you’re tracking, and how much history you want to compare against.

If you compete in IPF / USA Powerlifting (post-split note)

Use IPF GL for meet results. Every IPF-affiliated federation scores by IPF GL. The number you see on the meet sheet next to your name is IPF GL, and the “best lifter” trophy is decided on IPF GL.

If you compete in USAPL, USPA, WRPF, or any non-IPF federation

Use DOTS. It’s the official scoring formula across the non-IPF raw landscape and the number you’ll see on results. (USAPL split from the IPF in 2021 and uses DOTS for its best-lifter awards.)

If you don’t compete and just want to track yourself

Use DOTS. Two reasons. First, almost every modern training app and calculator defaults to DOTS, so you’ll see your number everywhere without having to convert. Second, the DOTS scale (200–600) is more granular than the IPF GL scale (0–100), which makes small training-block improvements easier to see — a 3-point DOTS jump in a 12-week block is visible; the equivalent IPF GL jump might be 0.6 points and feel like noise.

If you have a PR from 2017 with a Wilks score next to it

Convert it for context, but don’t try to compare directly. Take your Wilks score, run the same total through a DOTS calculator, and use the DOTS number going forward. Old Wilks scores are still meaningful — they just don’t share an axis with the modern formulas.

Don’t bother with Wilks 2.0

Unless you’re specifically curious. It exists, it’s mathematically defensible, and almost nobody uses it. If your goal is to compare your number against the broader powerlifting community, you want to be on the same coefficient they are.

---

Why the scores diverge most at the bodyweight extremes

This is the most useful intuition for an everyday lifter: the four formulas mostly agree in the middle, and disagree at the tails. If you weigh between 70 and 100 kg, the four scores will land within a handful of points of each other. If you weigh 55 kg or 130 kg, the spread widens — sometimes by 5–10% across the four formulas — because each one was fit to data that thinned out at those extremes.

This is why the IPF retired the original Wilks. The formula was fit on early-1990s competitive bodyweight distributions; the sport’s bodyweight extremes have shifted since, and the tails of the polynomial started over-rewarding lifters who didn’t exist in the original sample. Modern formulas are refits against more recent data with broader coverage at the tails.

Practically: if you’re a 56 kg lifter or a 125 kg lifter, expect the formulas to disagree, and use whichever one your federation uses. If you’re in the meaty middle, pick DOTS and move on with your training.

---

What about masters / age-adjusted scoring?

None of these four formulas adjust for age. A 55-year-old lifter scoring 380 DOTS and a 25-year-old lifter scoring 380 DOTS get the same number — even though the older lifter is producing that total against an aging neuromuscular system that’s working harder. Federations handle this with age coefficients layered on top of the strength coefficient. The most common is McCulloch, which is applied to either DOTS or Wilks for masters categories (40+).

The math is simple: you take your DOTS, multiply by the McCulloch coefficient for your age, and that’s your age-adjusted score for best-lifter purposes. A 50-year-old gets ~1.13×; a 60-year-old gets ~1.30×; a 70-year-old gets ~1.50×. The coefficient grows the older you get to keep masters lifters competitive with open lifters.

If you’re a masters lifter and want to understand what’s realistic for your decade, the DOTS score by age guide walks through what each age tier actually produces.

---

What the score won’t tell you

A coefficient is one number compressing three lifts and a bodyweight into a single value. That compression is useful for ranking competitors at a meet, but it loses everything that matters for training:

• Lift balance. Two lifters with identical DOTS can have wildly different ratios. A 220/130/220 squat/bench/deadlift has the same total as a 180/170/220 — different programs, different limiting factors.
• Trajectory. A DOTS of 350 trending up over 12 weeks is a very different lifter from a DOTS of 350 that’s been flat for two years.
• Recovery state. A peaked DOTS at the end of a meet block is not a fair comparison to a mid-volume-block DOTS.

The coefficient is a useful instrument for the question how strong am I right now. It is a poor instrument for the questions what should I train next or am I getting better. For the second question, you want a record of training maxes over time, not a single score.

---

The boring summary

• Use DOTS for everything except IPF meets.
• Use IPF GL at IPF meets.
• Convert old Wilks scores if you want context, but switch to DOTS going forward.
• Wilks 2.0 exists and you can ignore it.
• Add a McCulloch coefficient if you’re a masters lifter and want to compare across age groups.
• Pick a coefficient and stick with it. Switching back and forth across formulas to find the highest number is a tell that you’re optimizing for the score rather than for the strength.

Pick the right formula, calculate it after every training block, and watch the trend over six months. That trend is what matters. The single-snapshot number, on whichever coefficient, is just today’s reading.