Sinclair Coefficient Calculator

What is a Sinclair Coefficient?

A Sinclair Coefficient is a method used in Olympic weightlifting to compare different weight classes. It is a coefficient that adjusts the total weight lifted to account for the athlete’s body weight, allowing for a fair comparison between athletes of different sizes. The coefficient is updated every Olympic year based on the world records in each weight class.

Formula

The formula to calculate the Sinclair Coefficient (SC) is:

\[ SC = \frac{T}{10^{(A - B \cdot \log_{10}(W))}} \]

Where:

\( SC \) is the Sinclair Coefficient.
\( T \) is the total weight lifted by the athlete (kg).
\( A \) is the coefficient based on the world record total in the heaviest class (kg).
\( B \) is the coefficient based on the progression of world records from the lightest to the heaviest classes (kg).
\( W \) is the body weight of the athlete (kg).

Example

Let's say the total weight lifted (T) is 200 kg, the coefficient A (A) is 1.2, the coefficient B (B) is 0.1, and the body weight (W) is 75 kg. Using the formula:

\[ SC = \frac{200}{10^{(1.2 - 0.1 \cdot \log_{10}(75))}} \approx 200 / 15.85 \approx 19.43 \]

So, the Sinclair Coefficient (SC) is approximately 19.43.