Cat Pregnancy Week by Week: Due Dates, Signs & Kittening Care (2026)
If your cat has mated, the next nine weeks will bring big changes. This guide covers the due date, week-by-week changes, signs to watch for, and kittening preparation.
How Long Is a Cat Pregnant?
Most cats are pregnant for 63 to 65 days, with a normal range of about 60 to 70 days from mating. Because the exact mating day is not always known, vets treat the due date as the middle of a window rather than a single fixed day. A cat delivering a few days early or late is usually still normal.
The range exists because cats do not all conceive on the same schedule, and a queen may mate over several days. If she was with a male for a few days, use the middle of that period and watch the window, not just one day.
How Do I Calculate My Cat’s Due Date?
Add 65 days to the mating date to get the expected due date, then allow a normal window from day 60 to day 70. For example, mating on January 1, 2026 gives a due date of March 7, 2026, with a window of March 2 to March 12. Use the calculator linked below to get your cat’s exact dates instantly.
Try the Cat Pregnancy Calculator: enter the mating date and it returns the due date, the window, the current week, and vet milestones for ultrasound, X-ray, and nesting prep. Note those dates, especially day 58 for nesting and day 70 for calling the vet.
What Are the First Signs of Cat Pregnancy?
The earliest classic sign is pinking up, when the nipples turn pink and slightly enlarged around week 3. After that, look for a growing belly, steady weight gain, a bigger appetite from about week 5, and behaviour changes such as extra affection or withdrawal. No single sign proves pregnancy, so a vet check is the only confirmation.
Do not rely on behaviour alone. A cat that sleeps and eats more may simply be reacting to a routine change, and weight gain has many causes. The strongest pointer is a known mating followed by pinking up at week 3 and a steadily growing belly. If unsure, a vet visit settles it and gives you professional dates.
What Happens Week by Week During Cat Pregnancy?
In the first weeks there are few visible changes, then pinking up appears around week 3 and the belly grows steadily from week 5. Kittens can be confirmed by ultrasound from day 25 and counted by X-ray from day 45. In the final weeks she rests more, nests, and may go off food just before labour begins.
Weeks 1 and 2 are quiet, with fertilisation and implantation happening invisibly. Weeks 3 and 4 bring pinking up and possible morning sickness. Weeks 5 to 7 are the fast-growth phase, when the belly becomes obvious. Weeks 8 and 9 are about rest and nesting: she will groom more and seek quiet corners.
What Should I Feed a Pregnant Cat?
Feed a high-quality, complete kitten food or a pregnancy diet from about week 5, when her energy needs start to climb. Offer smaller, more frequent meals as the growing kittens squeeze her stomach, and keep fresh water available at all times. Ask your vet before adding supplements, since a balanced diet usually covers everything she needs.
In the first half of pregnancy her normal adult food is usually fine; overfeeding early only adds fat. The real increase comes in the second half, and climbs further once she is nursing, when she may need two to three times her usual amount.
How Do I Prepare a Kittening Box?
Set up a sturdy box lined with clean towels in a quiet, warm, draught-free spot by about day 58 after mating. Keep food, water, and your vet’s number nearby, and let your cat explore the box on her own terms. Some cats still choose their own hiding place, so stay flexible and do not force her in.
Choose a box with sides low enough for her to step over but high enough to contain newborn kittens. Line it with towels or newspaper you can change easily, and keep spare bedding ready. If she moves to a wardrobe instead, make that spot safe.
When Should I Call the Vet During Cat Pregnancy?
Call your vet if strong straining lasts for hours with no kitten, if more than two hours pass between kittens with continued straining, or if you see heavy bleeding, foul discharge, fever, vomiting, or collapse. Also call if she passes day 70 with no labour signs, stops eating for over a day late in pregnancy, or seems in pain.
Routine vet contact matters as much as emergency calls. A confirmation visit, an ultrasound from day 25, and an X-ray from day 45 let your vet count kittens and spot problems early. If five were expected and only four have arrived, keep watching and call for advice.
What Do Cat Owners Ask Most About Cat Pregnancy?
The questions owners ask most are how long pregnancy lasts, how to work out the due date, when a vet can confirm it, and what warning signs need urgent help. The short answers are below, and the full guide above explains each one in detail with dates, feeding advice, and kittening preparation.
Can a vet confirm pregnancy before week 3?
Not reliably. A vet can sometimes feel it from about day 21, but ultrasound from day 25 is the first dependable confirmation.
How many kittens do cats usually have?
Most litters have three to five kittens, though first-time mothers often have fewer and experienced queens sometimes have six or more. An X-ray from day 45 gives the most accurate count, which helps you know when labour is complete.
Should a pregnant cat stay indoors?
Yes, keeping her indoors from mid-pregnancy onwards is safest. It prevents another mating, protects her from traffic and infections, and means you will notice labour starting.
Can I use a dog pregnancy calculator for a cat?
No, use the calculator made for cats. Dog and cat pregnancies are similar in length, but the milestones, feeding advice, and warning signs differ. Dog owners should use the Dog Pregnancy Calculator, and cat owners should use the Cat Pregnancy Calculator.
Disclaimer: This guide is general information only, not veterinary advice. Only your vet can assess your cat, confirm a pregnancy, or advise on labour problems. If worried at any stage, contact your vet promptly.
