How Long Are Cats Pregnant?
Maybe the mating was planned. Maybe your cat came home one evening looking pleased with herself. Either way, you need dates, and cat pregnancies run on a tight schedule.
The nine weeks, in plain terms
Feline gestation averages 63 to 65 days from mating. Vets consider anything from about 61 to 70 days normal. In months that is a little over two. In weeks, nine. Kittens born before day 58 are premature and often struggle, so a cat who seems ready early deserves a vet call rather than a wait.
| Stage | Days | What happens |
|---|---|---|
| Weeks 1 to 2 | 1 to 14 | Fertilisation and implantation. No visible change. Cats ovulate in response to mating, which is why a single encounter so often results in pregnancy. |
| Weeks 3 to 4 | 15 to 28 | Pinking up: nipples enlarge and turn rosy, usually the first sign an owner spots. Some cats have a brief spell of morning sickness. Ultrasound can confirm from about day 21, gentle vet palpation from about day 25. |
| Weeks 5 to 6 | 29 to 42 | The belly rounds and appetite climbs. Switch her gradually to kitten food now, it carries the extra calories and calcium she needs through pregnancy and nursing. |
| Week 7 | 43 to 49 | An X-ray from about day 42 shows kitten skeletons and gives you a count. Knowing the number matters on delivery day, because it tells you when she is done. |
| Weeks 8 to 9 | 50 to 65 | Nesting. She seeks quiet, enclosed spots, so offer a box with soft bedding in a warm, low traffic room. Milk may appear a few days before birth. A drop in appetite and restlessness usually mean labor within 24 to 48 hours. |
Signs your cat is pregnant
Pinked up nipples from about week three, steady weight gain of one to two kilograms, a rounding belly rather than an all over fat gain, more sleep, more affection in many cats, and eventually obvious kitten movement along her flank. A vet can confirm early by ultrasound. Home pregnancy tests for humans do not work on cats, so save the money.
Labor, and when to worry
Most cats deliver without any help, quietly and often at night. Normal labor: contractions and strong straining produce a kitten within about 25 minutes, and kittens follow each other anywhere from ten minutes to an hour apart, sometimes with a rest of an hour or two in between. Call your vet if she strains hard for 25 to 30 minutes with no kitten, if more than two hours pass while she is clearly still trying, if you see fresh bleeding or a green or foul discharge with no kitten following, or if she is exhausted and unresponsive to the remaining kittens.
Cat pregnancy FAQ
How long are cats pregnant in weeks and months?
Nine weeks, or a little over two months. The precise average is 63 to 65 days from mating, with a normal spread of roughly 61 to 70 days.
How many kittens will she have?
Four is typical, and one to six covers most litters. First time mothers usually have smaller litters. An X-ray after day 42 gives you the real number, which is worth knowing before the birth.
Can she really get pregnant again while nursing?
Yes, and startlingly fast. Cats can return to heat within one to two weeks of giving birth. Keep her indoors and away from intact males until she is spayed, unless you genuinely want a second litter eight weeks after the first.
Should I change her food?
Yes. From around week four, transition her to a quality kitten formula over a week or so, and let her eat to appetite. She will need up to 50 percent more calories by late pregnancy and far more again while nursing. Keep her on kitten food until the litter is weaned.
My cat might be pregnant but I am not sure of any mating date. What now?
Book a vet visit. Palpation, ultrasound or an X-ray will confirm the pregnancy and give a decent estimate of stage, and the timeline above still applies once you know roughly where she is.
When can the kittens leave for new homes?
Twelve weeks is the standard vets and rescues recommend. Eight weeks is a legal minimum in some places, but the extra month with mother and littermates produces noticeably better adjusted cats.
Nine weeks from now you will have kittens to feed
Our kitten feeding chart covers mother and litter, from her pregnancy appetite through weaning.
Kitten feeding chartRelated cat calculators
Sources: Merck Veterinary Manual, feline reproduction; Cornell Feline Health Center; AAFP guidance on queening and kitten care. Last reviewed August 2026.