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Sinclair Score Calculator
Compare your Olympic Weightlifting total fairly across all weight classes. Find out your true relative strength.
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How it works
Follow the exact steps to get your result instantly and privately.
Step 1
Step 1: Select your gender
The International Weightlifting Federation (IWF) provides different Sinclair coefficients for men and women. Ensure you select the correct category.
The Math: The Sinclair Formula
The Sinclair coefficient allows for the statistical comparison of Olympic weightlifters in different bodyweight classes. It answers the question: 'What would this lifter total if they were an ultra-heavyweight, assuming they maintained their exact level of relative skill and strength?' The International Weightlifting Federation (IWF) recalculates the Sinclair coefficients every Olympic cycle based on the world records of the previous four years.
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Calculation Formulas
Coefficient = 10^(A × (log10(x/B))²) [If bodyweight x < B]
Coefficient = 1 [If bodyweight x ≥ B]
Where x is bodyweight in kilograms.
A and B are statistical parameters updated every Olympic cycle.Worked Example
If a male lifter weighs 73kg and totals 300kg, his Sinclair coefficient is approximately 1.284. His Sinclair score would be 300 × 1.284 = 385.2.
Worked examples
| Scenario | Calculation | Result |
|---|---|---|
| Lifter A — 61kg Male | 280kg total | Sinclair ≈ 403.4 |
| Lifter B — 59kg Female | 210kg total | Sinclair ≈ 286.7 |
| Lifter C — 89kg Male | 350kg total | Sinclair ≈ 406.8 |
DID YOU KNOW?
Quick facts
The Sinclair formula is updated every four years (after each Summer Olympics) by the IWF to reflect the latest world record progressions.
The formula essentially scales your total to what it would be if you weighed the same as the heaviest super-heavyweight champion.
Unlike powerlifting's Wilks or DOTS scores, Sinclair is strictly used for the Snatch and the Clean & Jerk.
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Frequently asked questions
A Sinclair score around 200 is typical for dedicated amateur weightlifters. Hitting 300 makes you highly competitive at a national level. Elite international competitors often score 400 or higher.
Because it is statistically tied to current world records. As super-heavyweights get stronger relative to lighter lifters (or vice versa), the A and B constants must be adjusted so that the 'pound-for-pound' comparison remains mathematically fair.
The Sinclair weightlifting calculator is an Olympic weightlifting calculator used to determine a lifter's relative strength. It multiplies your total by a specific Sinclair coefficient based on your body weight, enabling you to calculate Sinclair total scores and compare yourself to lifters in other classes.
No. The Sinclair formula was derived entirely from Olympic weightlifting data (Snatch + Clean and Jerk). Applying it to the Squat, Bench, and Deadlift yields inaccurate comparisons. When comparing Sinclair vs Wilks, remember that Sinclair is for weightlifting, and Wilks (or DOTS) is for powerlifting.