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
08 May 2027
340 days to go
Earliest (320d)
18 April 2027
Latest (365d)
02 June 2027

Pregnancy milestones

  1. D16
    1st ultrasound (pregnancy confirmation)
    18 June 2026
  2. D30
    2nd scan (heartbeat check)
    02 July 2026
  3. D60
    Sex scan (optional)
    01 August 2026
  4. D150
    Rhinopneumonitis vaccination (5th month)
    30 October 2026
  5. D210
    Rhinopneumonitis booster (7th month)
    29 December 2026
  6. D270
    Rhinopneumonitis 3rd vaccination (9th month)
    27 February 2027
  7. D300
    Tetanus + influenza booster (10th month)
    29 March 2027
  8. D320
    Prepare foaling box + foaling kit ready
    18 April 2027
  9. D330
    Daily udder check + night camera on
    28 April 2027
  10. D340
    Expected foaling date (±15 days normal)
    08 May 2027

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

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