How Big Is a Horse? Height in Hands and Weight by Breed

How is a horse measured?

A horse is measured from the ground to the withers, the highest point of the shoulders where the neck meets the back. The withers are used because, unlike the head, they stay at the same height whatever the horse is doing.

In the US, Britain, Ireland, Canada and Australia, height is traditionally given in hands. One hand is exactly 4 inches (10.16 cm), a unit that goes back to the width of a human hand. Heights are written as hands, a point, then extra inches. So 15.2 hands, written 15.2 hh, means 15 hands and 2 inches: 62 inches or about 157 cm. There is no such thing as 15.5 hands, because the number after the point only goes up to 3.

Most of continental Europe and international horse sport use centimeters instead.

Horse vs pony: where is the line?

The traditional dividing line is 14.2 hands (147 cm or 58 in). A mature animal under that height is usually called a pony, and anything taller a horse. The International Federation for Equestrian Sports (FEI) uses 148 cm without shoes or 149 cm with shoes.

Height is not the only difference. Ponies tend to have thicker manes, tails and coats, shorter legs, wider bodies and broad, short heads. Some breeds break the rule: Icelandic horses and Arabians are often under 14.2 hands but are still called horses, while the tiny Falabella and the American Miniature Horse are classed as horses by their registries.

How big are different horse breeds?

These are typical ranges, and individuals vary. Feeding also matters: a horse raised on poor grazing may never reach the size its genes would allow, which is one reason feral horses are often smaller than their domestic relatives.

How much does a horse weigh?

Weight follows height and build. A light riding horse of about 15–16 hands usually weighs 450–550 kg (1,000–1,200 lb), which is why 500 kg (1,100 lb) is often quoted as the weight of an “average” horse. Animal Diversity Web gives a range of about 227–900 kg (500–1,980 lb) for typical domestic horses, with outliers at both ends.

Draft breeds were developed to pull plows, wagons and timber, so they carry far more muscle and bone. Many heavy horses weigh 700–1,000 kg (1,540–2,200 lb), and big individuals go beyond 1,100 kg (2,400 lb). A horse is also long: the head and body together measure roughly 2.2–2.8 m (7–9 ft), not counting the tail.

The biggest horses on record

The tallest and heaviest horse ever recorded was Sampson, a Shire gelding born in Bedfordshire, England, in 1846 and later renamed Mammoth. By 1850 he stood 21.2½ hands, about 2.19 m (7 ft 2 in), at the withers, and his peak weight was estimated at 1,520 kg (3,360 lb).

In modern times, a Belgian gelding called Big Jake from Wisconsin held the Guinness record for the tallest living horse from 2010 until his death in 2021. He measured about 210 cm (20.2¾ hands), making him the second-tallest horse on record.

The smallest horses on record

The smallest horse on record was Thumbelina, a dwarf miniature horse born in Missouri in 2001. She stood just 43 cm (17 in) tall and weighed 26 kg (57 lb), smaller than many dogs, and died in 2018. Because she had dwarfism, she was much smaller than other miniature horses, which usually stand around 76–86 cm (30–34 in).

How does a horse compare with its relatives?

Most horses are taller and heavier than zebras and donkeys, though large donkey breeds can rival a pony. See the plains zebra and donkey profiles for more. Horses are big, but on land they are dwarfed by elephants, rhinos and giraffes, as our list of the largest animals in the world shows.