Foal Date Calculator

Please Note: This tool is intended to provide an estimate foaling date. Diamond S Horse and Cattle Company is not responsible for any injuries problems or incurred expenses arising from the use or misuse of this tool or any inaccuracy in the foaling date estimations.

Wondering when your mare will foal? The average gestation length in the mare ranges from 320 to 362 days; most mares will foal within 330-345 days of successful breeding. However, mares have successfully foaled with gestation lengths outside this range.