Whenever a length is measured in yards, this length is referred to as the object's yardage. The yard has its origins in 11th century England, where it was first established by referring to the arm of King Henry I. Calculating the yardage of an object is complicated by the fact that it often requires the conversion of one or more different units of measurement. Two of the most common things that are still measured in yards are golf courses and fabric.
Determine the length of the object for which you want to know the yardage. This may be information that is already available, or it may be something that you have to measure out yourself. If the object is something relatively small, such as a piece of fabric, you can use a standard English or metric ruler to determine the length. If the object is something larger, such as a plot of land, it is best to use a tape measure.
Know the conversion factor between the different units of measurement. For standard English measurements, 1 yard = 36 inches or 3 feet. For metric scale measurements, 1 yard = 91.44 centimeters or 0.9144 meters.
Convert the measurement to yards. To do this, divide the measurement by the unit's conversion factor. For example, if you had an object that measured 72 inches, you would first refer to the previous step to determine that the conversion factor for inches is 36. You would then divide 72 by 36 to get a yardage of 2.