Pets Calculators

Pet calculators for dog owners and breeders. The dog pregnancy calculator estimates a due date and whelping window from the mating date, or more precisely from an ovulation or LH-surge date if your vet has tested progesterone, and lays out a week-by-week pregnancy calendar with key milestones. Its gestation figures come from veterinary references, which are cited on the page. It is an educational estimate, not veterinary advice, so involve your vet in prenatal care.