Dog Pregnancy Calculator
Calculate your dog’s whelping (due) date from the mating date, with a week-by-week timeline of the pregnancy.
About the Dog Pregnancy Calculator
Dogs are pregnant for about 63 days, or nine weeks. Enter the date your dog was mated and this dog pregnancy calculator gives the expected whelping date, the normal birth window and key check-up dates so you can prepare in time.
How to Use the Dog Pregnancy Calculator
- Enter the date of mating (use the first date if there were several).
- Press Calculate.
- Use the timeline to plan vet visits and the whelping box.
Formula and How It Works
Due date = mating date + 63 days. Healthy births can happen anywhere between day 58 and day 68. A vet can confirm pregnancy by ultrasound from about day 25 and count puppies by X-ray after day 45.
Frequently Asked Questions
How long are dogs pregnant?
About 63 days from ovulation, which is usually 58–68 days from mating.
When should I call the vet?
Call if your dog strains for more than 30 minutes without a puppy, if more than 2 hours pass between puppies, or if she is past day 68.
Results are estimates for general information and are not medical or veterinary advice. Please speak to a qualified professional about your own situation.