Horses and People
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Horse Weight Calculator

To instantly estimate the weight of your horse, scroll down to use our Horse Weight Calculator

There are two ways to calculate the body weight of your horse. The first and most accurate way is to weigh your horse on an equine specific weighbridge, however, many of us don't have easy access to one. 
 
The second most accurate method is using a regular measuring tape and formula, as Mariette van den Berg from MB Equine Services explains: 
 
The Carroll & Huntington (1988) formula we use in this calculator has proved to be the most reliable for estimating the weight of adult horses. (Please note that formulas should not be relied on for young and miniature horses, pregnant mares and foals. With these horses, scales are the only reliable option).
 
WHY DO I NEED TO KNOW HOW MUCH MY HORSE WEIGHS?
  • To calculate your horse’s feed ration.
  • To accurately identify weight loss and weight gain. Allowing you to keep your horse or pony at a healthy weight by adjusting feed and grazing accordingly.
  • To identify any sudden weight loss which may indicate a health problem.
  • To enable the correct dosage and administration of medication, supplements and wormers.
  • Determining the maximum weight a horse can carry in a specific moment (preventing musculoskeletal problems sum of rider and gear should not exceed 15-20% of the live weight).
HOW TO MEASURE YOUR HORSE:
 
Make sure that your horse is standing square and is relaxed. Use a measuring tape that is long enough to measure the length of the horse. It is also advised to have another person or helper present that can assist with holding the horse and tape.
 
 
HEART GIRTH: 
The heart girth is measured around the front part of the body immediately behind the elbow and at the base of the withers. Record the measurement after the horse has breathed out.
 
BODY LENGTH:
The body length is measured from the point of the shoulder to the point of the buttock. Make sure the horse is standing square and still while you take the measurement. 
 
 
 

Weight (kg) = ( heart girth2 (cm) x body length (cm) ) / 11877