Use our Sinclair Score Calculator to measure Olympic weightlifting performance adjusted for bodyweight. Compare lifters fairly across weight classes with IWF-approved formulas.
Sinclair Score Calculator
If you’re serious about Olympic weightlifting or powerlifting, the Sinclair Score is a must-know metric. Unlike simple weight lifted stats, this score gives you a fair comparison between athletes of different bodyweights. Our Sinclair Score Calculator helps you accurately calculate your performance adjusted for bodyweight using official formulas recognized worldwide.
In this blog post, we’ll cover what the Sinclair Score is, how it works, how to use our tool, and why it’s important for competitive lifters. Whether you’re a coach, athlete, or fitness enthusiast, this guide is your go-to resource.
Table of Contents
What Is the Sinclair Score?
The Sinclair Score is a formula developed by the International Weightlifting Federation (IWF) to compare the performances of weightlifters regardless of bodyweight. It adjusts the total weight lifted based on the athlete’s body mass to produce a standardized score.
For example, if two athletes lift the same weight, but one weighs significantly less, their Sinclair Score will be higher — indicating better pound-for-pound strength.
How Is the Sinclair Score Calculated?
The score uses a mathematical formula involving:
- Your bodyweight
- The total weight lifted (best snatch + clean & jerk, or just one lift for raw data)
- Gender-specific coefficients (updated periodically by the IWF)
The Sinclair formula is:
Sinclair Score = Total Weight Lifted × Sinclair CoefficientThe coefficient is calculated as:
Coefficient = 10 ^ (A × [log10(B / bodyweight)]²)Where:
- A and B are constants that vary by gender.
- If your bodyweight is higher than a cutoff (B), the coefficient becomes 1 (no adjustment).
Try Our Free Sinclair Score Calculator
At My Calculators, we’ve created a simple yet powerful Sinclair Score Calculator that takes the math off your plate. Just input your gender, unit system (kg or lb), bodyweight, and the weight you lifted.
The calculator will instantly show your Sinclair Score, allowing you to:
- Track your progress
- Compare yourself with elite athletes
- Understand how bodyweight affects your performance
Why Is the Sinclair Score Important?
Here’s why this score matters, especially for competitive lifters:
1. Leveling the Playing Field
Smaller athletes often lift impressive weight relative to their size. The Sinclair Score adjusts for bodyweight to highlight relative strength.
2. Fair Comparison
It allows comparisons between lifters of different weight classes and genders without bias.
3. Performance Tracking
Track improvements over time, especially if your bodyweight changes.
4. Athlete Selection
Coaches use Sinclair Scores to identify athletes with the most potential, regardless of current weight class.
Example Calculation
Let’s walk through a quick example:
- Gender: Male
- Unit: Kilograms
- Bodyweight: 75 kg
- Weight Lifted: 130 kg
Using current coefficients (A = 0.794358141, B = 174.393):
Coefficient = 10^(0.794358141 × [log10(174.393 / 75)]²)
≈ 1.118
Sinclair Score = 130 × 1.118 ≈ 145.34
So, a 130 kg lift at 75 kg bodyweight gives a Sinclair Score of 145.34.
Features of Our Sinclair Score Calculator Plugin
Our WordPress plugin is designed with simplicity and accuracy in mind:
- Gender Selection (Male/Female)
- Unit Switcher (Kilograms or Pounds)
- Bodyweight Input
- Weight Lifted Input
- Reset Button
- Responsive, Mobile-Friendly Design
- Visually Aligned with all other My Calculators tools
Tips for Better Sinclair Scores
- Increase Strength, Not Just Weight: Train efficiently to improve strength without excessive weight gain.
- Master Technique: Better technique means more efficient lifts and fewer injuries.
- Track Bodyweight Closely: Even small changes can affect your Sinclair Score.
- Lift in Competitions: Real-time performance and nerves test your true capabilities.
Final Thoughts
Whether you’re a coach tracking multiple athletes or a solo lifter seeking progress, the Sinclair Score gives valuable insights beyond just the numbers on the barbell. It offers a deeper, fairer view of lifting prowess.
Also try our Weightlifting Strength Standards Calculator
Try our Sinclair Score Calculator today and unlock the power of true strength-to-weight analysis.
