Horse Gestation Calculator
Select the date when your mare was bred
Expected Foaling Date
Frequently Asked Questions
The average horse gestation period is approximately 340 days (about 11 months). However, healthy foals can be born anywhere from 320 to 370 days after conception.
This calculator uses the average 340-day gestation period. However, actual foaling dates can vary by several weeks. Factors like breed, mare's age, and individual variation can affect timing.
Signs include udder development, waxing of the teats, relaxation of the muscles around the tailhead, and behavioral changes. Most mares foal at night when it's quiet.
Yes, if your mare has consistently foaled earlier or later than average in previous pregnancies, consider that pattern when planning. Keep records of previous gestation lengths.
Contact your vet if the pregnancy extends beyond 360 days, if the mare shows signs of distress, or if you notice any abnormal discharge. Regular prenatal checkups are recommended throughout pregnancy.