Wilks, DOTS & IPF GL Calculator

Why these formulas exist

Powerlifting compares lifters across very different bodyweights, so a 60 kg lifter and a 120 kg lifter cannot be ranked by raw total alone. Strength coefficients translate the squat-bench-deadlift total into a single number that estimates strength relative to bodyweight. Wilks (1994) is the historical standard, fitted on world-record data of its era. DOTS (2020) refined the curve at the bodyweight extremes after analysing modern records and is now the official IPF formula. IPF GL Points (2020) is a separate fit produced by the IPF that lives alongside DOTS at international meets. All three return higher numbers for stronger lifts; the absolute scales differ slightly so values are not interchangeable. Use Wilks for historical context, DOTS or IPF GL for current competition reality.

How to use the Wilks calculator

Pick gender and units — Wilks coefficients differ for male and female lifters. The metric/imperial switch converts pounds to kilograms internally; the formulas themselves run on kilograms.
Enter your bodyweight — Use weigh-in weight, not training weight. The exact value matters because the coefficient changes faster at the bodyweight extremes.
Enter your total — Total is best squat + best bench press + best deadlift in kilograms. For a single lift, multiply that lift by 3 only as a rough placeholder.
Compare the three scores — Wilks for legacy comparisons, DOTS for modern reality, IPF GL for IPF-affiliated meets. The relative number (total/bodyweight) is a fourth, simpler reference.

The math

Each formula uses a 5th-order or exponential polynomial fitted to elite lifter data. score = coefficient(bodyweight, gender) × total. The coefficient curves peak at lighter bodyweights and decline gently as bodyweight grows. The IPF GL uses an exponential fit instead of a polynomial.

Strength tiers (Wilks)

Tiers below are commonly used in coaching circles and follow roughly the same boundaries on DOTS. Numbers are post-1994 IPF/USAPL norms.

Wilks	Level
< 200	Beginner
200 — 300	Novice
300 — 400	Intermediate
400 — 475	Advanced
> 475	Elite / national-level

Frequently asked questions

Wilks vs DOTS — which is correct?

Both are mathematically valid but DOTS reflects 2020-era records better. The IPF moved to GL Points for international meets. For Instagram bragging rights, Wilks is still the most widely recognised.

Why does the coefficient peak at lighter bodyweights?

Strength scales with cross-sectional muscle area (bodyweight^0.67 in theory) while bodyweight scales with volume. Lighter lifters move proportionally more weight, so the coefficient rewards them. Modern formulas dampen the early years of Wilks’ aggressive light-class tilt.

Is the formula different for women?

Yes. Each formula has separate male and female coefficients fitted to female elite data. They are not just a multiplier of the male curve.

Can I use Wilks for one rep maxes?

Wilks was designed for the powerlifting total. Some sub-scores (Wilks of best squat, best bench…) exist but are non-standard. Stick to total for credible comparisons.

Does equipment change the score?

No, the formula treats raw and equipped totals the same. Federations report them in separate categories so they remain comparable within the discipline.

What about the IPF Old formula?

The IPF used a separate "IPF Points" formula from 2018 to 2020 before adopting GL Points. It is now retired. Use DOTS or GL going forward.

Wilks, DOTS & IPF GL Calculator