HorseAppCompare
Free tool for breeders

Foaling Date Calculator

Predict your mare's foaling date from the covering or insemination date. Includes vaccination milestones and when to involve your vet.

Inputs

Normal range: 320-365 days.

Average gestation is 340 days. Variation from 320-365 days is completely normal.

Expected foaling date
01 August 2027
340 days to go
Earliest (320d)
12 July 2027
Latest (365d)
26 August 2027

Pregnancy milestones

  1. D16
    1st ultrasound (pregnancy confirmation)
    11 September 2026
  2. D30
    2nd scan (heartbeat check)
    25 September 2026
  3. D60
    Sex scan (optional)
    25 October 2026
  4. D150
    Rhinopneumonitis vaccination (5th month)
    23 January 2027
  5. D210
    Rhinopneumonitis booster (7th month)
    24 March 2027
  6. D270
    Rhinopneumonitis 3rd vaccination (9th month)
    23 May 2027
  7. D300
    Tetanus + influenza booster (10th month)
    22 June 2027
  8. D320
    Prepare foaling box + foaling kit ready
    12 July 2027
  9. D330
    Daily udder check + night camera on
    22 July 2027
  10. D340
    Expected foaling date (±15 days normal)
    01 August 2027

Disclaimer: Dates are indications — consult your vet for the vaccination schedule and at first signs of premature foaling.

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