Calculate the estimated foaling date for a mare based on the breeding or insemination date.
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The average gestation period for a mare is about 340 days from mating or insemination, but the normal range is typically 320–360 days. The calculator shows the calculated foaling date as well as the entire normal range.
The gestation period varies by breed, mare's age, previous foalings, and individual factors by several weeks. The calculated date is a good starting point for preparation, not an exact prediction.
Most breeders recommend enhanced monitoring about 2–3 weeks before the estimated foaling date, as foaling can occur prematurely or at any time within the range.
The average gestation period for a mare is about 340 days from mating or insemination, but the normal range is typically 320–360 days.
The gestation period varies by breed, mare's age, previous foalings, and individual factors by several weeks, so the calculated date is an estimate, not an exact prediction.
The gestation period is calculated from the date of mating or insemination. If you use frozen semen, use the insemination date as the starting date.
Most breeders recommend enhanced monitoring about 2–3 weeks before the estimated foaling date, as foaling can occur prematurely.
No, the calculator is specifically designed for a horse's gestation period of about 340 days. Other animal species have different gestation lengths.