Mare Gestation Calculator

*Uses an average 340 day gestation period for a Mare. Mare gestation periods can generally be anywhere from 320-370 days.

The Mare Gestation Calculator is a much easier process to use than the typical Mare Gestation Chart. The gestation chart is when you had to count the days until your horse’s due date. It in no way is to take away from the need for you to seek a vet’s advice. Their opinion is valuable about your mare’s gestation period. There are many items a vet will notice about proper care for your mare. Did you know horses need to sleep lying down to meet their sleep needs? But horses can also sleep standing up, but just won’t meet their REM sleep needs.

Important Guidelines in Using Our Mare Gestation Calculator

GestationCalculator.com is providing this mobile friendly Mare Pregnancy Calculator as a service. This service is for the horse owners and to help visitors answer the following questions.

To work properly, it’s important that you enter the 1st day your mare was bred. Some mare breeders will find this tool very helpful. So remember to bookmark it. Also, try using any of our other gestation calculators just for fun! We even have a sheep gestation calculator. Please direct any questions you may have to askabreeder@gmail.com.

Gestation Period for Mares

The Gestation Period for Mares is approximately 320-370 days from the first time being bred. Horses will not always conceive after one breeding and will generally mate multiple times in one cycle. The Mare Gestation Period Calculator above attempts to generalize the estimation of the due date. This is without any additional factors using a 340 day gestation period for a mare.