Mare Gestation Calculator
Calculate your mare's estimated foaling date and track trimester milestones.
Mare Gestation & Due Date Estimator
Calculates critical developmental checkpoints based on a 340-day average
Estimated Due Date
Calculating...
Note: Healthy foals can arrive safely anytime between Day 320 and Day 360.
Important Gestational Milestones
How to Use This Tool
This interactive calculator runs directly in your browser. Enter your horse's measurements or details to get instant results based on veterinary formulas. No data is ever sent to a server – your privacy is guaranteed.
Tips for Accurate Results
- Use a soft measuring tape for body measurements.
- Ensure your horse is standing square on level ground.
- Consult your veterinarian before making medical decisions based on these estimates.
Disclaimer: This tool provides educational estimates only. Always consult a qualified equine veterinarian for clinical advice.