Olympic Lifting Comparison – Sinclair Coefficients

by olyhq on January 22, 2012

The Sinclair Coefficient is a way in Olympic lifting that you can compare lifters in different weight classes.  This gives ranking bodies the abilities to rank all lifters vs. just ranking lifters in the same weight class.

It is a bit mathematically complex as the formula is:  10^A(log^10 (x/b))^b  if x<b

But thankfully it’s a little easier when it is calculated out for each weight class.  Simply take the calculated Sinclair Coefficient for the weight class multiplied by the weight lifted.


56kg – 1.5585

62kg – 1.4410

69kg – 1.3380

77kg – 1.2509

85kg – 1.1862

94kg – 1.1321

105kg – 1.0847

105+kg – 1.000


An example calculation for the world record holder in the 56kg weight class

305kg  x 1.5582 = 475.3491


If you look at this vs. 105+kg world record at 472 x 1.00 = 472, this puts the 56kg weight class record holder above 105kg+ record holder on a comparative basis.

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