Wilks / DOTS / IPF GL Calculator

What Are Wilks, DOTS, and IPF GL Scores?

All three formulas solve the same problem: how do you compare a 60kg lifter to a 120kg lifter fairly? Raw totals favor heavier athletes. These normalization formulas adjust for bodyweight so you can rank lifters across weight classes.

Each formula uses a different mathematical model — polynomial, power function, or exponential — with coefficients derived from competitive powerlifting data. The differences are subtle for most lifters but matter at the elite level.

Which Score Should You Use?

Wilks dominated for 20 years, but it's outdated. The original 1994 Wilks formula was revised in 2020, but the revision still relies on a 5th-degree polynomial that some researchers argue doesn't accurately model the strength-to-bodyweight curve at the extremes.

DOTS (Dots Official Total Score) was developed by Tim Henriques as a modern replacement. It uses competitive data from recent decades and aims to be fairer across all weight classes. Many non-IPF federations have adopted it.

IPF GL (Goodlift Points) is the official system of the International Powerlifting Federation since 2019. If you compete in IPF or its affiliates, this is your score. It uses an exponential decay model that closely matches actual competitive performance curves.

The practical advice: use the system your federation uses. For personal tracking, any of the three gives you a meaningful number to track over time.

Score Benchmarks

These ranges apply roughly to all three scoring systems — the absolute numbers differ slightly, but the competitive tiers are similar:

• Under 200 — Beginner: First 1-2 years of serious training. Focus on building your total.
• 200-300 — Intermediate: Solid training base. Competitive in novice meets.
• 300-350 — Advanced: Competitive at local and regional competitions.
• 350-400 — Elite: Top performers at regional and national level.
• 400-500 — National: Competitive at national championships. Top 1% of lifters.
• 500+ — World Class: International competitive level. Fewer than 0.1% of lifters reach this.

Why Bodyweight Matters

Muscle cross-sectional area scales with the square of body dimensions, but body mass scales with the cube. This means strength doesn't increase linearly with bodyweight — it follows a power law. A lifter who doubles their bodyweight doesn't double their strength.

The normalization formulas model this relationship mathematically. Wilks uses a 5th-degree polynomial, DOTS uses a 4th-degree polynomial divided into 500, and IPF GL uses an exponential decay function. Each arrives at a multiplier that levels the playing field.

For your own training, tracking your score over time removes bodyweight fluctuations from the equation. If your Wilks goes up during a bulk, you're genuinely getting stronger — not just heavier. RepStack's Strength Score applies similar bodyweight normalization across 5 lifts.

The Formulas

For those who want the math:

• Wilks (2020): Total × 500 / (a + b×BW + c×BW² + d×BW³ + e×BW⁴ + f×BW⁵) — sex-specific polynomial coefficients.
• DOTS: Total × 500 / (a + b×BW + c×BW² + d×BW³ + e×BW⁴) — 4th-degree polynomial with published coefficients.
• IPF GL: Total × 100 / (a - b × e^(-c × BW)) — exponential model with 3 sex-specific parameters.

All formulas use bodyweight in kilograms. This calculator handles unit conversion automatically.

Tips for Improving Your Score

Your score improves when your total goes up faster than the bodyweight penalty increases. Two strategies:

• Get stronger at the same bodyweight: Use our progressive overload calculator to systematically increase your lifts. Double progression — adding reps first, then weight — is the most reliable method.
• Identify your weakest lift: A 20kg improvement on your weakest lift is usually easier to achieve than 20kg on your strongest. In individual lift mode, this calculator shows which lift contributes most to your total.

Track your estimated 1RM with RepStack's 1RM calculator between meets to project your competition total.