The average horse weighs 1,100 pounds. There are 400 breeds of horses, and their weights vary from 120 to 2,200 pounds, according to National Geographic. Weight is a good indicator of horse health and should be checked often to make sure the horse is not gaining or losing pounds.
The weight of a horse can be measured with a weight scale, a weight tape, or girth and body length measurements. A weight tape, the most convenient and cheapest way to estimate how heavy a horse is, involves wrapping the tape around the horse's girth. A good diet is important to keep a horse at optimal weight, and should include high-quality grazing and supplements.