Did you know you can use math to estimate the mature height of a foal?
Use a string or tape measure and measure the distance from the fetlock to the elbow. Using that same measurement, place one end of the string or tape measure at the elbow and hold it straight up to where her withers will be. Add 2 inches. This indicates her approximate mature height at the withers when she’s all grown up.
The standard unit of measurement for a horse’s height is hands.
1 hand = 4 inches or 10 centimeters
A more exact conversion to metric is 1 hand = 10.2 cm. Most people simply round down to 10 cm.