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horse weight calculations

How to Calculate Horse Weight

Horse Weight

Unless you are a commercial horse farmer, you probably do not own a livestock scale to weigh your mares, stallions and foals. Figuring out how to weigh a horse is easy if you can measure the animal's body length and girth. Use this guide to determine the weight of your horses:

  • Measure the horse's circumference, as shown in "distance C" in the illustration. Make sure to measure girth in relation to the location of the animal's heart.
  • Measure the length of the animal's body, as shown in distance A-B in the illustration.
  • Using the measurements from steps 1 and 2, calculate body weight using the formula HEART GIRTH x HEART GIRTH x BODY LENGTH / 300 + 50 = ANIMAL WEIGHT IN POUNDS. For example, if a horse has a heart girth equal to 78 inches and a body length equal to 65 inches, the calculation would be (78 x 78 x 65) / 300 + 50 = 1,368 lbs.