Animal Pregnancy Calculators
Gestation calculators for breeding programs and veterinary care across multiple species. Enter breeding date, get due date instantly.
Dog Pregnancy Calculator
Enter your dog’s breeding date and get the estimated whelping date plus a week-by-week pregnancy timeline with key milestones.
Use calculatorCat Pregnancy Calculator
Calculate your cat’s due date from the breeding date. Average feline gestation is 63–65 days.
Rabbit Gestation Calculator
Find your rabbit’s kindling date. Rabbit gestation averages 28–32 days from breeding.
Guinea Pig Pregnancy Calculator
Calculate your guinea pig’s due date. Average gestation is 59–72 days.
Cow Gestation Calculator
Calculate a cow’s expected calving date. Average bovine gestation is 283 days.
Goat Gestation Calculator
Find your goat’s kidding date. Average caprine gestation is 150 days.
Sheep Gestation Calculator
Calculate your ewe’s lambing date. Average ovine gestation ranges from 144 to 151 days.
Swine Gestation Calculator
Find your sow’s farrowing date. The classic rule: 3 months, 3 weeks, 3 days (114 days).
Mare Gestation Calculator
Calculate your mare’s foaling date. Equine gestation averages 340 days (range 320–370).
About Our Animal Pregnancy Calculators
From dogs to dairy cows, our animal pregnancy calculators use species-specific gestation averages to give accurate due date estimates. Each calculator also shows a week-by-week timeline of key pregnancy milestones.
The Dog Pregnancy Calculator and Cat Pregnancy Calculator are most popular for pet owners. Farmers and breeders most often use the Cow Gestation and Mare Gestation Calculators.