How to use it
- Choose units, category (men or women) and the formula.
- Enter your bodyweight and the sum of your best squat, bench press and deadlift.
- Read the score and the coefficient that multiplied your total.
Formulas
With bodyweight x in kilograms, the coefficient is a scale divided by a polynomial:
- Wilks (original): 500 ÷ (a + bx + cx² + dx³ + ex⁴ + fx⁵). Men: a = −216.0475144, b = 16.2606339, c = −0.002388645, d = −0.00113732, e = 7.01863e−6, f = −1.291e−8. Women: a = 594.31747775582, b = −27.23842536447, c = 0.82112226871, d = −0.00930733913, e = 0.00004731582, f = −0.00000009054.
- Wilks 2020: 600 ÷ the same kind of polynomial with revised coefficients. Men: a = 47.4617885411949, b = 8.47206137941125, c = 0.073694103462609, d = −0.00139583381094385, e = 7.07665973070743e−6, f = −1.20804336482315e−8. Women: a = −125.425539779509, b = 13.7121941940668, c = −0.0330725063103405, d = −0.0010504000506583, e = 9.38773881462799e−6, f = −2.3334613884954e−8.
- DOTS: 500 ÷ (a + bx + cx² + dx³ + ex⁴). Men: a = −307.75076, b = 24.0900756, c = −0.1918759221, d = 0.0007391293, e = −0.000001093. Women: a = −57.96288, b = 13.6175032, c = −0.1126655495, d = 0.0005158568, e = −0.0000010706.
The score is the total times the coefficient. Pounds are converted to kilograms first.
Worked example
A man of 80 kg with a 500 kg total, using DOTS: the polynomial gives −307.75076 + 1927.20605 − 1228.00590 + 378.43420 − 44.76928 = 725.1143. The coefficient is 500 ÷ 725.1143 = 0.6895, and the score is 500 × 0.6895 = 344.8. The original Wilks coefficient at 80 kg is 0.6827 (score 341.3) and Wilks 2020 gives 0.8191 (score 409.6).
Limits
- A score compares lifters only roughly. It does not account for age, height or training experience.
- Always cite which formula you used when comparing scores.