Start Calculating Free

Mare Gestation Calculator

Predict Foaling Date • Monitor Health • All Breeds

Enter breeding date and mare details.

Date of last service

Enter breeding date

Track weight, ultrasound, and milestones.

300–900 kg

Advanced tracking

Monitor mare health and get alerts.

Normal: 37.5–38.5°C

Health monitor

Mare Gestation Calculator: Plan Your Foaling

The mare gestation calculator is the gold standard for equine breeders. This mare gestation calculator predicts foaling date, tracks pregnancy stages, and monitors mare health.

"Equus est anima mea — The horse is my soul." — Equestrian Wisdom

How the Mare Gestation Calculator Works

Our mare gestation calculator uses:

  • Breed-Specific Gestation: 320–370 days
  • Seasonal Adjustment: ±14 days
  • Foal Sex: Colts +3 days
  • Weight Tracking: 12–15% gain
  • Health Alerts: Temperature, udders, behavior

Mare Gestation Calculator: Key Milestones

  • Day 0: Breeding
  • Day 14–16: Ultrasound confirmation
  • Day 45: Heartbeat visible
  • Day 90: Sex determination
  • Day 300: Prepare foaling stall
  • Day 320–370: Foaling window

Why Use This Mare Gestation Calculator?

Trusted globally:

  • All Breeds
  • Seasonal Accuracy
  • Health Alerts
  • Weight Tracking
  • Mobile-Optimized

Mare Gestation Calculator: Health Tips

Best practices:

  • Vaccinate at 9 months
  • Deworm at 10 months
  • Monitor udder from day 300
  • Check waxing 1–3 days before
  • Prepare foaling kit

Mare Gestation Calculator Limitations

This mare gestation calculator is a guide. Always consult a veterinarian. Foaling can occur ±30 days from prediction.

Plan with the Mare Gestation Calculator

Be ready for foaling. Use the mare gestation calculator now!

Calculate Foaling