Free tool, real vet math
Cat Pregnancy Calculator
This free cat pregnancy calculator turns the mating date into a kitten due window: cats are pregnant for 63 to 67 days, about nine weeks. Enter the date (or your best guess) and get her due window, where she is right now, and an announcement card for the family group chat.
Cat pregnancy week by week
| Stage | What happens |
|---|---|
| Weeks 1 to 2 | Fertilization and implantation. No visible changes yet. |
| Week 3 | Nipples pink up: rosier, larger, hard to miss on a first-time mom. Ultrasound can confirm from about day 21. |
| Week 4 | Morning-sickness phase for some queens: briefly off her food. A vet can gently feel the kittens. |
| Week 5 | Belly visibly rounding, appetite rising. Switch her toward kitten food for the extra calories. |
| Week 6 | Obvious pregnancy. She rests more and grooms her belly. |
| Week 7 | An X-ray can count kitten skeletons, so the vet can tell you how many to expect. |
| Week 8 | Nesting begins: she hunts for quiet, warm hideouts. Provide a birthing box somewhere calm. |
| Weeks 9 to 10 | Labor typically arrives day 63 to 67. Restlessness, calling, and milk coming in mean kittens are close. |
Cat pregnancy questions, answered
How long are cats pregnant?
About 63 to 67 days from mating, roughly nine weeks, with 65 days a good average. Most healthy queens deliver inside that window; anything past 67 days is a reason to call your vet.
How can I tell if my cat is pregnant?
The first visible sign is usually "pinking up" around week three: her nipples become rosier and more prominent. From there, rising appetite, a rounding belly, and more sleep. A vet can confirm by ultrasound from about day 21 and can count kittens by X-ray from about day 45.
How many kittens will she have?
Typical litters run three to five kittens, though first litters are often smaller and some queens surprise everyone. An X-ray in the final two weeks is the reliable way to know the count before delivery.
What should I do before the due date?
Set up a birthing box in a quiet, warm, low-traffic spot about two weeks before the window opens, switch her toward kitten food for the extra calories, and keep your vet’s number handy. She will handle most of the rest.
Is this calculator really free?
Completely. No account, no email, and the photo you add to the announcement card never leaves your device. We make custom pet portraits for a living and this is our gift to cat people.
Breeders, rescues, vets: put this on your site
Embed the due-date calculator free. Copy, paste, done.
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<p style="font-size:14px"><a href="https://www.petpicportraits.com/cat-pregnancy-calculator">Cat pregnancy calculator</a> by <a href="https://www.petpicportraits.com">Pet Pic Portraits</a></p>The kittens will need baby pictures
And mama deserves a portrait for surviving them. Free preview in about 30 seconds, hand-reviewed by a real person, nothing prints without your approval.
See your cat as art (free preview)More free cat tools: the kitten age calculator and the cat age calculator. Or see all free pet calculators.