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Wilks Score Calculator

Work out wilks score instantly with clear inputs, formula shown and shareable results.

About Wilks Score Calculator

The Wilks coefficient normalises a powerlifting total for body weight using a fifth-order polynomial, so lifters across weight classes can be ranked. A 500 kg total at 90 kg gives a coefficient near 0.594 and a Wilks score around 297. Scores above 400 are advanced and above 500 are elite; the formula was the international standard until IPF GL points replaced it.

Formulas

Wilks coefficient

coeff = 500 / (a + bx + cx^2 + dx^3 + ex^4 + fx^5), x = body weight

Wilks score

score = total x coefficient

Worked example

With the default values below, Wilks Score Calculator returns Wilks Score of 319.20. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total liftedminimum 0 kg
500 kg
Body weightaccepts 25–250 kg
90 kg
Sexone of Male, Female
Male

Results

Wilks Score
319.20
Wilks Coefficient
0.6384
Total Relative To Body Weight
5.556 x bodyweight
Strength Class
Intermediate

Step by step

  1. 1Values used
  2. 2Wilks coefficient
  3. 3Wilks score
  4. 4Wilks Score= 319.20
  5. 5Wilks Coefficient= 0.6384
  6. 6Total Relative To Body Weight= 5.556 x bodyweight
  7. 7Strength Class= Intermediate

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.

Frequently Asked Questions

Why does Wilks favour some weight classes?

The polynomial was fitted to record data from the 1990s, and critics showed it slightly favours middleweight men and heavier women, which prompted the newer formulas.

Has Wilks been replaced?

The IPF moved to GL points in 2020, but Wilks remains widely used in gyms and by other federations.

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