🤰 Cat Pregnancy Calculator & Due Date
Cats are pregnant for about 63–65 days. Enter the mating date to see the due date, the full window and the signs to look for along the way.
The timeline
Around three weeks in, the nipples turn pink and swell (“pinking up”) — usually the first sign an owner notices. The belly rounds out from about week five. In the last week she will look for a quiet, warm, private place to give birth.
Frequently asked questions
How long are cats pregnant?
About 63 to 65 days, with births seen anywhere from about 61 to 72 days.
How can I tell if my cat is pregnant?
Pink, enlarged nipples from about day 15–21, weight gain and a rounder belly. A vet can confirm by ultrasound from about day 15.
These calculators give general estimates for healthy pets. They are not veterinary advice — if your pet is unwell or has eaten something it shouldn’t, call your vet.