The result of your conversion between carreau and yard appears here
To convert between Carreau and Yard you have to do the following:
First divide 12900 / ((0.003785411784/231)*1728)*27 = 16872.56298916
Then multiply the amount of Carreau you want to convert to Yard, use the chart below to guide you.
Symbol: carreau
No description
Symbol: yd
No description