The Wilks Calculator converts your bodyweight and total lifted weight into a single Wilks score, letting you compare strength across different body sizes. Enter your gender, bodyweight, and meet total, and the calculator outputs your Wilks points using the official coefficient formulas.
What Is a Wilks Score?
A Wilks score is a strength coefficient used in powerlifting and weightlifting to compare lifters of different bodyweights. It applies a polynomial formula to your bodyweight and your total (the combined weight you lifted in the meet). The result is a normalized score.
In practice, a higher Wilks score means a stronger performance relative to bodyweight. Many competitions use Wilks tables or formulas, especially when they want a single comparison number.
Wilks Calculator Inputs
To compute Wilks points, you need three inputs:
- Gender (male or female): coefficients differ by gender.
- Bodyweight: your weigh-in bodyweight.
- Total: your meet total (e.g., sum of squat + bench + deadlift).
The calculator supports common units for bodyweight (kg or lb). Total can be entered in kg or lb, and the calculator keeps everything consistent.
The Wilks Formula (Coefficients Explained)
The Wilks score is computed as:
Wilks Points = Total / WilksFactor
Where the WilksFactor is a polynomial function of bodyweight.
Step 1: Use the correct coefficients
Wilks coefficients are different for men and women. For each gender, the Wilks factor uses the same polynomial structure but different coefficient values.
Step 2: Calculate the polynomial
Let BW be bodyweight in kilograms. Then:
- Men: WilksFactor = (a + b·BW + c·BW² + d·BW³ + e·BW⁴ + f·BW⁵) where a–f are the male coefficients.
- Women: WilksFactor = (a + b·BW + c·BW² + d·BW³ + e·BW⁴ + f·BW⁵) where a–f are the female coefficients.
The calculator uses the standard Wilks coefficient set used in common Wilks implementations. If your federation uses a different coefficient revision, confirm before relying on results for official scoring.
Unit Conversions (How the Calculator Keeps It Correct)
Wilks formulas use bodyweight in kilograms. If you enter bodyweight in pounds, the calculator converts it to kg before applying the polynomial.
Your total can be entered in kg or lb. Since the Wilks factor is unitless when using the kg-based bodyweight polynomial, the score scales with the same unit system as your total. The calculator converts totals when needed so you get consistent Wilks points for your chosen unit.
How to Use the Wilks Calculator (Quick Steps)
- Select your gender.
- Enter your bodyweight and choose kg or lb.
- Enter your total and choose kg or lb.
- Click Calculate to get your Wilks score.
For best accuracy, use the same weigh-in bodyweight that matches the meet total.
Practical Examples
Example 1: Comparing two lifters at different bodyweights
Lifter A weighs 80 kg and totals 200 kg in a meet. Lifter B weighs 95 kg and totals 240 kg. Raw totals favor Lifter B, but Wilks points normalize for bodyweight. Use the Wilks Calculator to see who has the higher relative strength.
Example 2: Tracking progress over time
If your bodyweight changes during a training cycle, raw totals can look better or worse just from weight gain or loss. By calculating Wilks points each meet, you can track whether your strength is improving relative to your size.
Common Mistakes to Avoid
- Mixing bodyweight units: Wilks uses kg internally, so wrong conversions can skew results.
- Using the wrong total: Wilks expects the meet total you want to compare (commonly squat + bench + deadlift).
- Relying on different coefficient sets: some federations use updated tables. Always match your federation’s method for official comparisons.
Frequently Asked Questions
What does a Wilks Calculator measure?
A Wilks Calculator measures your relative strength by converting your meet total and bodyweight into a single Wilks score. It uses gender-specific polynomial coefficients and normalizes performance so lifters with different body sizes can be compared fairly.
Do Wilks scores use kilograms or pounds?
Wilks formulas are based on bodyweight in kilograms. If you enter bodyweight in pounds, the calculator converts it to kg before computing the Wilks factor. Your total can be entered in kg or lb, and results follow your chosen unit consistently.
How is Wilks different from Sinclair or IPF points?
Wilks, Sinclair, and federation-specific point systems all normalize strength, but they use different coefficient models and sometimes different rules. Wilks is widely used for general comparisons, while other systems may be tailored to specific leagues with different normalization curves.
Why do my Wilks results differ from an online table?
Differences usually come from coefficient revisions, rounding, or unit handling. Some tables use updated Wilks coefficients or different precision. Verify you’re using the same gender, bodyweight unit, and coefficient set as the source you’re comparing against.
What bodyweight should I enter?
Enter your official weigh-in bodyweight for the meet session associated with your total. If you have multiple attempts or sessions, use the weigh-in that corresponds to the total you’re scoring. Consistency matters because the Wilks factor depends strongly on bodyweight.
Bottom Line
The Wilks Calculator gives you a clear, normalized strength score from your bodyweight and total lift. Use it to compare lifters, evaluate training progress, and understand performance across weight classes with a single number.