Ask five powerlifters which scoring system is “correct” and you’ll likely get three different answers. DOTS, Wilks, and IPF GL Points all exist for the same underlying reason — comparing lifters fairly across different bodyweights and sexes — but they were built at different times, using different data, and they’re used in different contexts today. This guide breaks down how each one works, where they diverge, and which one makes sense depending on what you’re trying to do.
What Is DOTS?
DOTS (Dynamic Objective Team Scoring) was introduced in 2019 by Tim Konertz. It uses a 4th-degree polynomial curve, fitted to modern competition data, to convert bodyweight and total into a normalized score. It’s used by federations including USAPL and USPA to determine “best lifter” awards for non-master (open) divisions, and it’s widely used informally across the sport as a general benchmarking tool.
What Is Wilks?
The Wilks formula, introduced in 1994 by Robert Wilks, was the standard bodyweight-adjustment formula in powerlifting for roughly 25 years. It uses a similar polynomial-based structure but was fitted to the competition data available at the time. As the sport grew and more data accumulated at the extreme ends of the bodyweight spectrum, analysts found Wilks became less accurate for lifters under roughly 52 kg and over roughly 120 kg — undervaluing some very heavy lifters in particular. Many older meet results and legacy rankings still reference Wilks scores.
What Are IPF Points (IPF GL)?
IPF GL (“GL” for Glossbrenner-Lombardo, referencing the statisticians involved) is the International Powerlifting Federation’s official scoring formula, adopted in May 2020 to replace the earlier IPF Points system. It’s used by the IPF and its national affiliates — including Powerlifting America — to rank “best lifter” at IPF-sanctioned meets. A key structural difference from DOTS: IPF GL applies separate coefficients for raw versus equipped lifting, since equipment category meaningfully changes achievable totals.
Side-by-Side Comparison
| DOTS | Wilks | IPF GL Points | |
| Introduced | 2019 | 1994 | 2020 (replaced IPF Points) |
| Formula type | 4th-degree polynomial | 4th/5th-degree polynomial | Exponential-based formula |
| Equipment-specific? | No — same formula for raw and equipped | No | Yes — separate raw/equipped coefficients |
| Used officially by | USAPL, USPA (non-master best lifter) | Legacy/historical rankings | IPF and IPF-affiliated federations (e.g., Powerlifting America) |
| Known limitation | Newer, less legacy data for comparison | Less accurate at extreme bodyweights | Less familiar to lifters outside IPF-affiliated meets |
Main Differences That Actually Matter
- Accuracy across bodyweight extremes: DOTS was specifically built to correct Wilks’ known weaknesses at very light and very heavy bodyweights.
- Equipment handling: IPF GL separates raw and equipped lifting; DOTS and Wilks do not.
- Federation adoption: which formula “counts” for an award depends entirely on which federation is running the meet — always check the rulebook for your specific competition.
- Familiarity: Wilks scores appear throughout older historical rankings, so they’re still useful for comparing performances across eras.
Should You Treat These Scores as Interchangeable?
No. A 400 Wilks and a 400 DOTS are not the same relative performance — the underlying curves and coefficients differ. If you’re comparing your own progress over time, pick one formula and stick with it consistently. If you’re comparing across different competitions or eras, check which formula each result was originally scored under before drawing conclusions.
Which Calculator Should You Use?
If your federation’s best-lifter award is based on DOTS — which is common outside strictly IPF-affiliated meets — use a DOTS calculator to track your progress in the metric that will actually be used to judge your performance. If you’re specifically training for an IPF-sanctioned meet, also check your IPF GL Points, since that’s the number that determines placings there.
FAQ
Which is more accurate, DOTS or Wilks?
DOTS is generally considered more accurate across the full bodyweight range because it was fitted to more recent competition data and specifically addresses Wilks’ known undervaluation of very light and very heavy lifters.
Does USAPL use DOTS or IPF Points?
USAPL, as a Powerlifting America / IPF affiliate, uses IPF GL Points for its official IPF-sanctioned “best lifter” rankings, while also commonly referencing DOTS for other award categories and general comparison — always confirm with the specific meet’s rulebook.
Can I convert a Wilks score directly into a DOTS score?
Not with a simple conversion factor — the two formulas use different curves, so you need your original bodyweight and total to calculate an accurate DOTS score from scratch.
Why did IPF stop using Wilks?
The IPF moved to IPF Points and later IPF GL to get a formula better suited to its own competition data, including separate handling for raw versus equipped divisions, which Wilks did not provide.
Is DOTS used outside of powerlifting?
DOTS was designed specifically for powerlifting’s squat-bench-deadlift total and bodyweight relationship, so it isn’t typically applied to other strength sports.
