Wilks Weight Calculator

Wilks Formula:

\[ Wilks = \frac{lift}{a + b \times weight + c \times weight^2 + d \times weight^3 + e \times weight^4 + f \times weight^5} \]

Wilks Coefficient:

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1. What is the Wilks Coefficient?

The Wilks Coefficient (or Wilks Score) is a measure of strength relative to body weight used in powerlifting. It allows for fair comparison between lifters of different body weights by normalizing performance.

2. How Does the Calculator Work?

The calculator uses the Wilks formula:

\[ Wilks = \frac{lift \times 500}{a + b \times weight + c \times weight^2 + d \times weight^3 + e \times weight^4 + f \times weight^5} \]

Where:

\( lift \) — Weight lifted (kg)
\( weight \) — Body weight (kg)
\( a-f \) — Gender-specific coefficients

Explanation: The equation accounts for the non-linear relationship between body weight and strength potential, with different coefficients for men and women.

3. Importance of Wilks Score

Details: The Wilks Score is widely used in powerlifting competitions to compare performances across weight classes and determine overall winners in meets with multiple weight classes.

4. Using the Calculator

Tips: Enter your best lift (bench press, squat, or deadlift) in kg, your body weight in kg, and select your gender. All values must be valid (weights > 0).

5. Frequently Asked Questions (FAQ)

Q1: What's a good Wilks Score?
A: A score of 300+ is considered good, 400+ is excellent, and 500+ is world-class for drug-tested lifters.

Q2: Why multiply by 500 in the formula?
The 500 multiplier scales the score to a more readable range (typically 0-500+).

Q3: Is Wilks still used today?
A: While still widely used, some federations have moved to newer formulas like IPF Points (formerly IPF GL).

Q4: Does Wilks work for all lifts?
A: Yes, it can be calculated for any single lift or the total of squat, bench press, and deadlift.

Q5: How does gender affect the calculation?
A: Different coefficient sets are used for men and women to account for physiological differences in strength-to-weight ratios.