Estimate when your dog is likely to whelp from the date she was bred. Canine pregnancy lasts about sixty three days on average measured from ovulation, though counting from the breeding date the range is roughly fifty seven to sixty five days because sperm can survive several days before fertilisation. This tool adds sixty three days to your chosen breeding date to project a due date and also shows an earliest and latest window so you can plan for whelping supplies and a calm space. It lists a few key milestones along the way, such as when abdominal swelling and nesting behaviour often appear. Litter timing varies, so treat the date as a guide and involve your vet for confirmation by ultrasound or x ray. Everything runs locally in your browser, and this is general information, not veterinary advice.
Canine pregnancy averages about 63 days from breeding, so the tool adds 63 days to the date you enter to estimate the whelping due date.
Actual whelping usually falls within roughly 58 to 68 days of breeding, so the calculator gives a most likely date plus an expected range around it.
It maps out key stages such as implantation, when puppies become detectable, and the final nesting phase, based on the standard 63 day cycle.
Estimate when your dog is likely to whelp from the date she was bred. Canine pregnancy lasts about sixty three days on average measured from ovulation, though counting from the breeding date the range is roughly fifty seven to sixty five days because sperm can survive several days before fertilisation.
Yes. Dog Pregnancy Due Date Calculator is completely free, with no sign-up and no usage limits.
Yes. Dog Pregnancy Due Date Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Dog Pregnancy Due Date Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
Link this tool from a README, doc or site. The badge links back to this page.
[](https://yourhack.ai/dog-pregnancy-calculator)