Horse Weight Calculator
Measure your horse's heart girth and body length, choose the unit and horse type, and get an estimated body weight in kilograms and pounds. This formula is an estimate, and a scale is more accurate.
Last updated: September 25, 2026
Frequently asked questions
How do I measure heart girth?
Run a soft tape around the barrel just behind the elbow and withers, snug but not tight, and read it as the horse breathes out.
How do I measure body length?
Measure in a straight line from the point of the shoulder to the point of the buttock, with the horse standing square.
How accurate is this estimate?
It is a useful approximation, often within a few percent for typical horses, but it can be further off for very thin, heavy, pregnant, or unusually shaped animals.
Can I use this to calculate medication doses?
No. Dosing decisions should be based on a scale weight and your veterinarian's instructions, not a tape estimate.
Why is there a horse type option?
Younger and smaller animals carry weight differently, so common versions of the formula use a different divisor for them.
How is this different from a weight converter?
A weight converter changes units, such as kilograms to pounds. This tool estimates a weight from body measurements.