Dog Pregnancy Calculator
Enter the mating date to find your dog's estimated due date, days remaining and current pregnancy stage.
Average dog gestation is 63 days (range 58–68 days). May vary by breed.
Mating date
Dog Pregnancy: Stages, Signs and Due Date Calculator
When you learn your dog is pregnant, knowing the estimated due date is essential for planning veterinary appointments and preparing for the birth. Dog pregnancy averages 63 days, but can range from 58 to 68 days depending on breed size and individual factors.
Dog Pregnancy Stages
| Stage | Days | Development | Signs |
|---|---|---|---|
| 1st Trimester | 1–21 | Embryo formation | Few signs, decreased energy |
| 2nd Trimester | 22–42 | Organ development | Belly growth, ultrasound |
| 3rd Trimester | 43–63 | Rapid growth | Nesting, breast swelling |
Preparing for Whelping
One to two weeks before birth, prepare a quiet, clean and warm whelping box for your dog. Line it with gauze or soft towels. Let the dog get used to it beforehand. In the 24 hours before labor, body temperature drops below 37°C; the dog may stop eating and become restless. If waiting between puppies exceeds 2 hours or contractions continue without delivery, veterinary intervention is required.
This calculator produces estimates based on the mating date. Actual birth may occur a few days earlier or later. Consult a veterinarian for health concerns, signs of complications or a confirmed due date.