Foaling Due Date Calculator
Mares average 340 days of gestation (range 320–365). Enter a breeding date to see the projected foaling window.
Inputs
Results
- Estimated due date
- June 5, 2027340-day average
- Earliest expected
- May 16, 2027320 days
- Latest expected
- June 30, 2027365 days
How to use foaling due date calculator
Enter your numbers above and the result updates instantly. Every calculation runs in your browser — nothing is stored or sent to a server. Use it as many times as you like.
Pair this tool with the rest of our breeding tools resources to plan your barn, your budget, and your season. New calculators are added every month — check back often.