Comparing Horse to Human Age

Have you ever wondered how old you are in horse years? Or, have you wondered how old your horse is in human years? There are no hard and fast equivalents. Horses and humans age and mature at different rates. So all comparisons are only estimates and shouldn't be taken too seriously. 

Research completed in 2003 by equine veterinarians has compared the stages of human ages to horse ages. The chart below is based on that research as published by Equine Resources International. It's important to remember that many things affect aging like basic care, size, genetics, and overall health, just as in humans. 

Factors That Affect Equine Aging

For example, ponies mature faster but live longer than larger horses. Some age record breakers have been ponies. Poor health will shorten a horse's life and may delay or damage its physical development. Nutrition and workload play a huge role in equine aging. This makes it very difficult to make an accurate match between horse and human age. This is only one of the several charts that try to map out horse-to-human age comparisons. Horses mature much faster than humans do. Horses may be more likely to die from a disease or colic than of old age. 

On the chart you see here, under the age of one year old, there is no comparison. A human infant may take over a year to learn to walk, but a horse will walk within an hour after birth. Human