Average height of a horse?
a horse is 14.2 hands and above and a pony is 14.2 and below
Horse Height Horse sizes vary a lot by breed but a horse is over 14.2 hands when measured at the withers. The average varies from breed to breed, as obviously a light show hack who's maximum height is around 16.hh is never going to have the same average height as a shire or other draught/heavy horse who's minimum height may be 16.hh.
There is no real 'average' size for a horse as each breed of horse has a set standard as far as height goes and what the horse is used for affects height also. But generally speaking a horse in the 15.0 to 15.3 hand range would be about average, a horse that size would weight between 900 to 1200 pounds typically.
The size of the pony will depend on what size you are and possibly if you are done growing or not. A horse or pony should not carry anymore than 20% of it's own bodyweight, this includes the tack and riders weight, this means that for example a 1,000 pound horse or pony could carry up to 200 pounds of weight, so long as it is reasonably fit. As for height that is really more…