Wilks Coefficient Calculator
Compare powerlifting strength across weights.
Formula first
Overview
The Wilks Coefficient is a mathematical formula used in powerlifting to compare the relative strength of lifters across different body weight categories. It scales an athlete's total weight lifted against a standardized coefficient derived from a quintic polynomial, effectively normalizing performances to determine an overall best lifter regardless of size.
Symbols
Variables
fitness_center = Total Lifted (kg), functions = Wilks Coefficient, emoji_events = Wilks Score
Apply it well
When To Use
When to use: This formula is applied during powerlifting meets to compare athletes across different weight classes or to determine 'Pound-for-Pound' rankings. It is specifically intended for the total sum of the squat, bench press, and deadlift.
Why it matters: Strength does not scale linearly with body mass due to biological and geometric factors. The Wilks Coefficient provides a level playing field so that a 60 kg lifter and a 120 kg lifter can be objectively compared to see who is technically stronger relative to their own mass.
Avoid these traps
Common Mistakes
- Using the wrong coefficient table.
- Mixing kg and lb.
One free problem
Practice Problem
A male powerlifter completes his meet with a total lift of 650 kg. If his specific Wilks coefficient is determined to be 0.6542 based on his weigh-in, what is his final Wilks score?
Solve for:
Hint: Multiply the total weight lifted by the coefficient assigned to the athlete's body weight.
The full worked solution stays in the interactive walkthrough.
References
Sources
- Wikipedia: Wilks Coefficient
- Wilks Coefficient (Wikipedia article)
- Standard curriculum — Sports Science (Strength Athletics Scoring)