Foaling Calculator

Calculate an approximate due date
Enter last breeding date
in format mm/dd/yyyy:
Desired gestation duration:

Estimated foaling date:


Number of days mare in foal calculator
Enter last date mare was bred:
Enter today's date:

Estimate of days mare has been in foal

This equine foaling calculator is based on 330 days gestation.
You should average plus or minus 10 days for actual foaling window.