Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Fitness
Wilks Score Calculator
Calculate your Wilks score to compare powerlifting strength fairly across different body weights and genders. Used in competitions to determine Best Lifter awards regardless of weight class.
Fill in the required fields to see your result.
Fitness
One Rep Max Calculator
Predict your one-rep max (1RM) — the heaviest weight you could lift for a single perfect rep — from a recent set you actually performed. Used by powerlifters, strength coaches, and bodybuilders to prescribe percentage-based training (e.g., "work up to 5×5 at 80% of 1RM") without the risk and recovery cost of repeatedly testing true maxes.
Fill in the required fields to see your result.
Key differences
| Wilks Score Calculator | One Rep Max Calculator | |
|---|---|---|
| Category | Fitness | Fitness |
| Inputs required | 4 | 4 |
| Result | Wilks Score (points) | Estimated 1RM (kg) |
| What it does | Calculate your Wilks score to compare powerlifting strength fairly across different body weights and genders. Used in competitions to determine Best Lifter awards regardless of weight class. | Predict your one-rep max (1RM) — the heaviest weight you could lift for a single perfect rep — from a recent set you actually performed. Used by powerlifters, strength coaches, and bodybuilders to prescribe percentage-based training (e.g., "work up to 5×5 at 80% of 1RM") without the risk and recovery cost of repeatedly testing true maxes. |