How Do You Calculate the Acreage of an Irregularly Shaped Lot?

In order to calculate the acreage of an irregularly shaped lot, first calculate the average of the front and rear borders of the lot as well as the average of both side borders of the lot. Then multiply the two numbers and divide by 43,560.

Averages are obtained by multiplying the parallel lot sides together and dividing the total by two, which calculates the square footage of the lot. There are 43,560 square feet (approximately 4,047 square meters) in an acre, so dividing the square footage by 43,560 will give an accurate calculation for the acreage of an irregularly shaped lot.