Enter the total area (acres) and the usable land percentage (%) into the Calculator. The calculator will evaluate the Farm Area. 

Farm Area Formula

FA = TA * ULP/100


  • FA is the Farm Area (acres)
  • TA is the total area (acres)
  • ULP is the usable land percentage (%)

To calculate the Farm Area, multiply the total area by the usable land percentage over 100.

How to Calculate Farm Area?

The following steps outline how to calculate the Farm Area.

  1. First, determine the total area (acres). 
  2. Next, determine the usable land percentage (%). 
  3. Next, gather the formula from above = FA = TA * ULP/100.
  4. Finally, calculate the Farm Area.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total area (acres) = 57

usable land percentage (%) = 80