The result of your conversion between cawney and square fathom appears here
To convert between Cawney and Square Fathom you have to do the following:
First divide (4/3) * (0.09290304*43560) / 3.3445228 = 1613.32688873
Then multiply the amount of Cawney you want to convert to Square Fathom, use the chart below to guide you.
Symbol: cawney
No description
Symbol: ftm
No description