Horse Gestation Calculator

Estimated Foaling Date:

Earliest Possible Date:

Latest Possible Date:

1. What is Horse Gestation?

Definition: Horse gestation is the period from breeding to foaling, averaging 338 days but ranging from 320 to 370 days.

Purpose: This calculator predicts your horse’s foaling date to assist in preparing for the foal’s arrival.

2. How Does the Calculator Work?

The calculator estimates the foaling date based on the breeding date using this formula:

\[ \text{Foaling Date} = \text{Breeding Date} + 338 \, \text{days} \]

Explanation: The average gestation period for horses is approximately 338 days (about 11 months), though foaling can occur between 331 and 345 days depending on factors like breed and health.

3. Signs of Horse Pregnancy

Indicators: Early signs include missed heat cycles (every 21 days). Later, expect belly growth (around 6 months), udder enlargement (last month), and restlessness near foaling.

4. Preparing for Foaling

Tips: Provide a spacious foaling stall, monitor diet (increase late-term), and schedule vet visits. Watch for waxing teats and relaxed ligaments near delivery.

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