Wilks Calculator

• •Use the Wilks Calculator when you need accurate results quickly without the risk of manual computation errors or unit conversion mistakes.
• •Use it to verify calculations made by hand or in spreadsheets — an independent check can catch errors before they lead to costly decisions.
• •Use it to explore how changing input parameters affects the output — a quick way to develop intuition and identify the most influential variables.
• •Use it when collaborating with others to ensure everyone is working from the same numbers and applying the same assumptions.

The Wilks score is the standard method for comparing powerlifting strength across different body weight classes. A 60 kg lifter totaling 400 kg and a 100 kg lifter totaling 500 kg cannot be directly compared without adjusting for the advantage that higher body weight provides. The Wilks coefficient applies a body-weight-dependent multiplier to the raw total, producing a score that allows fair comparison. The Wilks Calculator computes this coefficient using the official 5th-degree polynomial for your gender and body weight, then multiplies it by your total. Scores above 300 are competitive at the local level, above 400 at the national level, and above 500 at the international level. The formula has been used by the International Powerlifting Federation since the 1990s.

• !Entering the total in pounds instead of kilograms; the Wilks formula requires kg.
• !Using individual lift numbers instead of the combined total (squat + bench + deadlift).
• !Comparing Wilks scores across different federations with different equipment rules (raw vs. equipped).