Calculate mare's approximate due date
Enter last breeding date in format

Desired gestation duration:

Estimated foaling date:
Number of days mare in foal
Enter last date mare was bred:

Enter today's date:

Estimate of days mare is in foal

You should average plus or minus 10 days for actual foaling window.
From personal experience, Miniatures foal around 330 +/- days!

L'il Beginnings Miniature Horses -