Dog pregnancy calculator
Type the date she was bred: the whelping date, the likely window and what to do before.
Dogs carry about 63 days — about 2 months. Most have their puppies between day 57 and day 65 after breeding.
Date bred
The day she was with the male.
Pick the date she was bred to see her due date.
Example: a female bred on September 1 is due about November 3 — most likely between October 28 and November 5.
What to do and when
Day 28
Ultrasound
Scans after day 28 are reliable.
Day 49
X-ray to count the puppies
Around week seven.
Day 57
Take her temperature
A drop below 99 °F (37.2 °C) usually means puppies within 24 hours.
Day 66
Past her normal window
Call your vet. From a breeding early in her heat she may carry up to 72 days — your vet can tell.
A common guide — your vet’s plan wins.
Questions
How long are dogs pregnant?
Dogs carry about 63 days — about 2 months. Most have their puppies between day 57 and day 65 after breeding.
How do I work out a dog’s due date?
Add 63 days to the day she was bred. Example: a female bred on September 1 is due about November 3 — most likely between October 28 and November 5.
Why a window and not one day?
No two dogs are the same. Most give birth between day 57 and day 65, so start watching her at the beginning of the window. Counted from the day of ovulation, dogs carry 62–64 days; from a breeding the count varies more.
What if she was with the male for weeks?
Enter the first and the last day they were together. The window then runs from the first day plus 57 days to the last day plus 65 days.
Sources
Last checked September 30, 2026. A common guide — your vet’s plan wins.
More calculators
Remembers every animal’s due date and reminds you before each job — the pregnancy check, the pen, the watch. Coming to the App Store this winter.