Dog Pregnancy Calculator

How the Dog Pregnancy Calculator Works

Dogs are pregnant for about 63 days on average — roughly nine weeks — measured from the breeding date. This calculator adds 63 days to give the estimated due date, and shows the normal whelping window of 58 to 68 days, since healthy litters arrive anywhere in that range. It also tracks how far along your dog is today and which trimester she’s in.

Because ovulation timing varies, dating from a single breeding date is an estimate; a vet can confirm and refine it with progesterone testing or ultrasound. Puppies delivered before 58 days may need extra care, so note the start of the window.

due date = breeding date + 63 days  (window 58–68 days)

Note: a friendly estimate based on common averages. Breeds vary widely — your veterinarian knows your pet best.