To get an idea of mature size, stand the young foal squarely on a level surface this will go much more smoothly if the foal has been halter-broken, leads well, and is controlled by a helper. Double this measurement and you have an idea of how tall the mature horse will be. When using this method on a yearling horse, measure from the elbow to a point about one-fourth of the way from the fetlock to the ground, and double this measurement. Probably the young horse will reach a mature height similar to his full siblings, assuming all have been fed and managed in the same way.
Estimating the Mature Height of a Foal, Method 2
Projected Height Calculator
When I was looking to buy a weanling, I lusted after this lovely weanling in Riegelsville, PA pictured left. He was a big boy at birth and large for his age when I was considering him. He was out of my price range, and the gods were smiling on me because now as a long yearling, it's looking like he will probably top out at There's not a heap of scholarly research on predicting horse height, at least not in the licensed databases I can access.
Growing Up: Estimating Adult Horse Size
Often speculation arises about how tall a foal will become at maturity. Many years ago, somebody taught me about predicting the future height of a horse from measurements taken when it was just a foal. The method of measurement shown me was one taken on a straight line from the front of either front leg starting at the corona or hairline and extending to the middle of the knee joint.
Just how tall will my foal or young horse get? Measure your horse from fetlock to elbow, then apply this measurement from elbow to withers and beyond. The measurement in inches corresponds to his full height e. When considering potential mature height, it is also worth noting that young foals that look more like a scaled down version of a large horse are more likely to be smaller when they are full grown.