Calculate your Wilks coefficient for powerlifting. Compare strength across weight classes and genders. Includes IPF DOTS and GL coefficients.
The Wilks coefficient is powerlifting's standard formula for comparing strength across different body weights, enabling fair competition between a 60 kg lifter and a 120 kg lifter. It applies a weight-dependent multiplier to your competition total (squat + bench press + deadlift), producing a score where higher is stronger relative to body weight.
The formula was developed by Robert Wilks and uses a 5th-degree polynomial that adjusts for the empirical relationship between body weight and absolute strength potential. Lighter lifters get a higher multiplier because their pound-for-pound strength potential is relatively higher. A Wilks score of 300 is considered intermediate, 400 is advanced, and 500+ is elite/world-class.
This calculator computes Wilks, IPF DOTS (the newer replacement), and GL (Goodlift) coefficients from your body weight and total. It provides benchmarks for each gender, classifications by skill level, and comparison across all three scoring systems. Check the example with realistic values before reporting.
Compare powerlifting strength across weight classes, track relative strength progress, and evaluate competition performance. Keep these notes focused on your operational context. Tie the context to the calculator’s intended domain. Use this clarification to avoid ambiguous interpretation. Align this note with review checkpoints. Apply this where interpretation shifts by use case.
Wilks = Total × Coefficient(bodyweight). Coefficient = 500 / (a + b×x + c×x² + d×x³ + e×x⁴ + f×x⁵) where x = bodyweight(kg). DOTS = Total × DOTS_Coefficient(bodyweight). GL = Total × GL_Coefficient(bodyweight). All use gender-specific polynomial constants.
Result: Wilks: 386.3, DOTS: 385.1
Total: 580 kg. Male Wilks coefficient at 83 kg ≈ 0.666. Wilks = 580 × 0.666 = 386.3. This is advanced-level strength, approaching competitive powerlifter territory.
The Wilks coefficient uses a 5th-degree polynomial: Coeff = 500 / (a + bx + cx² + dx³ + ex⁴ + fx⁵) where x is bodyweight in kg. The male constants: a=-216.0475144, b=16.2606339, c=-0.002388645, d=-0.00113732, e=7.01863E-06, f=-1.291E-08. This polynomial was fit to world-record data to equalize performance across weight classes.
DOTS (adopted by IPF 2019) was created by Tim Konertz as a modern update using current competition data. GL (Goodlift, adopted for some IPF events) uses a different mathematical model. In practice, all three produce similar rankings—the differences matter most at extreme bodyweights (very light or super-heavy). For tracking personal progress, consistency matters more than which formula you use.
If your Wilks has plateaued despite increasing your total, you may be gaining bodyweight faster than strength. This signals a need to either maintain weight while getting stronger, or accept that you're building toward a higher weight class. Conversely, if Wilks increases while your total stays flat, you're getting leaner and more efficient.
Men: <200 untrained, 200-300 beginner, 300-400 intermediate, 400-500 advanced, 500+ elite. Women: Multiply these thresholds by ~0.85. A 400 Wilks is very respectable in local competition; 500+ is national/international class.
DOTS (adopted by IPF in 2019) better accounts for extreme body weights and has been validated against modern competition data. Wilks tends to favor lighter lifters slightly. Both are widely accepted; DOTS is becoming the new standard.
Because absolute strength increases with body weight, but not linearly. A 60 kg lifter can never total as much as a 120 kg lifter in absolute terms, but the 60 kg lifter may be proportionally stronger. The coefficient normalizes this non-linear relationship.
Not directly—the coefficients use different gender-specific polynomials. A 400 Wilks for a female lifter represents a more exceptional achievement than 400 for a male lifter. For cross-gender comparison, use GL or DOTS scores from the same system.
The highest recorded Wilks scores exceed 700 points, achieved by elite lightweight lifters with extraordinary pound-for-pound strength. Most all-time powerlifting records produce Wilks in the 550-650 range.
You can apply the coefficient to any single lift (Wilks Squat, Wilks Bench, Wilks Deadlift) for relative comparison. This is common in bench-press-only or deadlift-only competitions.