Ask five farmers how much their hay bales weigh, and you’ll probably get five ... To know how many cubic feet are in a round hay bale, you need to know its volume. That takes a bit of math.

and weigh about 50 pounds (23 kilograms). Large hay bales (generally round): Measure 5 feet wide by 6 feet in diameter (1.5 × 1.8 meters) while weighing around 1,500 pounds (680 kilograms).