A hand is defined as 9.8cm so it would be about 15hh.
it is 20.2 hands high.
12.2 and a half hands So it is not actually a horse,its a pony because its under 14.2 hands.
Four inches is one hand on a horse.
Horses below about 8-10hh are considered minature. Sometimes they are measured in only inches because they are so small!