The measurements of a standard two-string hay bale are 14 by 36 by 18 inches. The measurements of a standard three-string hay bale are 16 by 48 by 24 inches. Two-string bales typically weigh between 50 and 60 pounds, while three-string bales weigh about 100 pounds.
Two and three-string refer to the amount of strings used to hold the hay bale together. These bales are square and also known as small bales. Large bales are round and measure about 5 feet wide by 6 feet tall. These bales weight about 1,500 pounds.
The type of bale chosen depends on the amount needed and the available equipment. Large bales are more cost-effective but require equipment to move.