Home Back

Equine Due Date Calculator

Equine Gestation Calculation:

\[ Due\ Date = Breeding\ Date + 340\ days \]

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Equine Due Date Calculator?

The Equine Due Date Calculator estimates the expected foaling date for horses based on the average gestation period of 340 days. This helps breeders and veterinarians prepare for the foaling event.

2. How Does the Calculator Work?

The calculator uses the standard equine gestation formula:

\[ Due\ Date = Breeding\ Date + 340\ days \]

Where:

Note: Actual gestation can range from 320-370 days, with 340 days being the average.

3. Importance of Accurate Due Date Calculation

Details: Knowing the expected foaling date helps in proper mare management, scheduling veterinary checks, and preparing foaling facilities.

4. Using the Calculator

Tips: Enter the breeding date in the format YYYY-MM-DD. The calculator will add 340 days to estimate the foaling date.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the 340-day gestation period?
A: While 340 days is the average, normal gestation can range from 320-370 days. Individual mares may vary.

Q2: What factors can affect gestation length?
A: Season, mare's age, foal's sex, and nutrition can all influence gestation length.

Q3: When should I start monitoring the mare closely?
A: Begin close monitoring about 2 weeks before the calculated due date.

Q4: Should I rely solely on this calculator?
A: No, use this as a guide along with veterinary advice and physical signs of impending foaling.

Q5: What if my mare goes past the calculated due date?
A: Consult your veterinarian if gestation exceeds 365 days as this may indicate a problem.

Equine Due Date Calculator© - All Rights Reserved 2025