Free Dog Pregnancy Calculator
This dog pregnancy calculator gives your dog's due date and a timeline. Enter the breeding date to start.
Pregnancy timeline for your dates
How long are dogs pregnant?
Dogs are pregnant for about 63 days (9 weeks). Counted from a single mating, puppies usually arrive 58 to 68 days later, because sperm can live for several days and the exact ovulation date is rarely known. This is why the dog pregnancy calculator shows a window, like a dog gestation calculator, rather than one date.
Dog pregnancy timeline
Typical milestones counted from the breeding date. Enter a date in the dog pregnancy calculator above to see them on your own calendar.
| Day | Week | What usually happens |
|---|---|---|
| 9 | 2 | Embryos implant in the uterus; there are usually no visible signs yet. |
| 25 | 4 | A vet can often confirm pregnancy by ultrasound from around days 25–30. |
| 30 | 5 | Appetite may dip briefly; some dogs have a clear discharge. |
| 42 | 6 | Weight gain and belly size become noticeable; ask the vet about feeding changes. |
| 45 | 7 | An X-ray from about this point can count puppies, because skeletons are visible. |
| 55 | 8 | Set up the whelping area and book the vet for the due window; nesting often starts. |
| 60 | 9 | Check temperature as the vet advises; a drop below about 99°F (37.2°C) often comes 12–24 hours before whelping. |
How the dog pregnancy calculator works out the due date
- From the breeding date: expected day 63, with a likely window of days 58–68.
- From ovulation (progesterone test): day 63, usually within a day either side.
- From the LH surge: day 65, usually within a day either side. This is the most precise method.
Puppies born before about day 58 are premature. A vet visit around the due window is wise, especially for first litters and flat-faced breeds that often need a Caesarean.
Feeding during pregnancy changes from the second half; ask your vet before switching food. Tracking her cycles? Use the dog heat cycle calculator. For feeding a non-pregnant adult use the dog food calculator. Expecting kittens instead? Try the cat pregnancy calculator.
Frequently asked questions
How does the dog pregnancy calculator work?
It adds the typical gestation length to the date you enter: 63 days from breeding or ovulation, 65 from the LH surge. It works as a dog due date calculator and shows the likely window around that date.
How long are dogs pregnant?
About 63 days from ovulation, or 65 days from the LH surge. Counted from the breeding date it is usually 58 to 68 days, because sperm can survive several days and ovulation timing varies.
How can I tell if my dog is pregnant?
Signs such as a bigger belly, enlarged nipples and nesting appear later. A vet can confirm pregnancy by ultrasound from about day 25–30, or by a hormone test from about day 25.
When can I count the puppies?
An X-ray from about day 45 shows the skeletons and gives the most reliable puppy count.
When should I call the vet?
Call if your dog goes past about day 68 from breeding, has green or bloody discharge before the first puppy, or strains for over an hour without producing a puppy.