If your cat has been with a male, the first thing you want to know is when the kittens are due. Cat pregnancy is short compared with most animals: about nine weeks. This guide explains how to count the days, what a normal cat gestation period looks like, how to spot early signs, how to prepare a place for the birth and when to ask your vet for help. It also explains why cat dates behave differently from dog dates, so that you do not mix the two up.
How long is a cat pregnant?
A queen (a female cat) is pregnant for about 63 to 65 days after mating, according to the Merck Veterinary Manual. Births between day 61 and day 69 are usually considered normal. The window is tighter than in dogs because cats are induced ovulators: they release eggs in response to mating, so the mating date is a good starting point for counting.
| From mating | What it means |
|---|---|
| Day 0 | Mating date (the starting point) |
| Day 61 | Earliest day a birth is usually considered normal |
| Day 63 to 65 | Most likely due window |
| Day 69 | Latest day a birth is usually considered normal |
In weeks, that is a little over nine weeks. People searching for “how many weeks are cats pregnant” or “how many months” usually want the short version: about two months, or nine weeks.
Count the days with a real example
If your cat mated on 1 October 2026:
- Day 61 is 1 December 2026.
- Day 63 to 65 is 3 to 5 December 2026.
- Day 69 is 9 December 2026.
To check this with your own dates, use the Cat Pregnancy Due Date Calculator. To see which day and week of pregnancy she is in right now, use the Cat Pregnancy Week Calculator. Both count from the date you enter, so the better your mating date, the better the answer.
Why the due date is a window, not a day
It helps to remember that a calculator gives a window, not an appointment. A normal pregnancy can end anywhere from day 61 to day 69, and the whole litter does not always arrive in one go. Three things make the date fuzzy:
- The mating date may be uncertain. If you did not see the cat mate, you are guessing from her behaviour or from when a male was around.
- Cats can mate more than once. A queen in season may mate several times over a few days, and the dates may differ from one kitten to the next.
- Individual cats vary. Like people, cats do not follow the calendar exactly.
If you are not sure about the date, enter the most likely one, treat the result as a window of several days and ask your vet to confirm the pregnancy and the timing with an ultrasound.
Cat pregnancy week by week
Counting from the mating date, week 1 is days 0 to 6, week 2 is days 7 to 13, and so on. Week 9 is days 56 to 62, which means the likeliest birth days (63 to 65) fall at the very start of week 10.
| Week | Days from mating |
|---|---|
| 1 | 0 to 6 |
| 2 | 7 to 13 |
| 3 | 14 to 20 |
| 4 | 21 to 27 |
| 5 | 28 to 34 |
| 6 | 35 to 41 |
| 7 | 42 to 48 |
| 8 | 49 to 55 |
| 9 | 56 to 62 |
| Due window | 63 to 65 (normal to day 69) |
This table only counts days. What changes in your cat’s body week by week is for your vet to guide you through, because it depends on the individual cat and the size of the litter.
Signs a cat may be pregnant
Your vet can confirm pregnancy, but some signs are easy to notice at home:
- Pink, enlarged nipples, often noticed around the third week.
- A growing belly and weight gain as the pregnancy goes on.
- A change in appetite, which can go up or down.
- Nesting behaviour, such as looking for quiet, hidden places.
- A change in affection or mood. Some queens become more clingy, others more withdrawn.
None of these proves pregnancy. A cat can gain weight for other reasons, and some pregnant cats show very little. An ultrasound is the way to confirm it, and your vet can often tell you roughly how many kittens to expect later in the pregnancy.
Pregnancy, heat and what comes next
A cat’s reproductive cycle is quite different from a dog’s. Cats come into season repeatedly through the breeding season and can become pregnant very quickly after giving birth. If you do not plan to breed, ask your vet about neutering, including the right age and what to do if your cat is already pregnant. If your cat is not yet an adult, the Cat Age Calculator shows her life stage, which helps you talk to your vet about timing.
Caring for a pregnant cat
A pregnant cat does not need a dramatic change in routine, but a few things matter:
- Book a vet visit to confirm the pregnancy and plan the birth. This is also the moment to ask about vaccinations, parasite control and anything specific to your cat.
- Ask about food. Pregnant and nursing cats need more energy than a normal adult cat, so ask your vet for a plan instead of using the standard adult amount. The Cat Calorie Calculator is built for normal adult cats and kittens, not for queens in pregnancy or lactation.
- Keep water available at all times, in a spot that is easy to reach.
- Prepare a quiet place. A box or bed in a calm, warm, draught-free spot gives her somewhere to give birth. Introduce it a couple of weeks early so it is familiar.
- Keep your vet’s out-of-hours number handy, along with the details of the nearest emergency clinic.
Preparing a birthing space: a checklist
| Item | Why it helps |
|---|---|
| A cardboard box or low-sided bed | A private, enclosed place she can choose to use |
| Soft, washable bedding | Easy to change and keep clean |
| A quiet, warm room | Cats prefer calm, low-traffic spots |
| Easy access to food, water and a litter tray | So she does not have to leave the kittens for long |
| Your vet’s number on the fridge | Fast access if something looks wrong |
Let her pick the place she likes. If she chooses a wardrobe or the back of a cupboard, it is usually easier to make that spot safe than to move her.
During and after the birth
Many queens give birth without any help, and the best thing you can usually do is stay calm, keep the room quiet and watch from a distance. Know the warning signs in the next section, and write down the time that labour appears to start so you can tell your vet.
After the birth, keep an eye on the mother’s appetite and behaviour and on whether all the kittens are warm and feeding. Ask your vet when to bring the mother and kittens for a check, and when the kittens should have their first vaccinations. When the kittens are weaned, the Kitten Food Calculator shows an age- and weight-appropriate daily amount; before then, the mother’s milk is the kittens’ food.
When to call the vet
Call your vet straight away if:
- There are no kittens by day 69 from mating.
- She strains for 30 to 60 minutes without producing a kitten.
- She seems unwell at any point during the pregnancy, for example lethargic, refusing food or with unusual discharge.
- She has kittens that are not feeding or are unusually cold after the birth.
When in doubt, call. A vet would rather answer a question than treat an emergency, and clinics generally prefer to hear from you early.
Cat vs dog pregnancy
People often compare the two species, so here is how the timelines line up. The figures come from the Merck Veterinary Manual.
| Cat | Dog | |
|---|---|---|
| Typical length | 63 to 65 days from mating | About 63 days from ovulation |
| Normal range from mating | Day 61 to 69 | Day 58 to 68 |
| Starting point | Mating (cats ovulate after mating) | Ovulation, LH surge or mating |
| Ultrasound confirmation | Ask your vet | From about 25 days after mating |
| Where to read more | This guide | How long are dogs pregnant |
The important difference is the starting point. Dogs can ovulate days before or after they mate, so their dates have a wider window unless a vet measures hormones. Cats ovulate in response to mating, so the mating date is a more reliable start. If you also want to look at dogs, use the Dog Pregnancy Due Date Calculator.
Common mistakes when counting
- Counting from the day you noticed a bump. Count from the mating date, not from when you first suspected pregnancy.
- Assuming one exact day. Treat day 63 to 65 as the middle of a window.
- Using the dog calculator for a cat. The numbers differ.
- Feeding a pregnant cat like a normal adult cat. Her needs are different, so ask your vet.
- Waiting too long to call. If something looks wrong, a quick call is better than a long wait.
- Forgetting to write the dates down. Note the mating date, the vet’s visit and any changes in behaviour.
Questions to ask your vet
- Can you confirm the pregnancy and estimate the number of kittens?
- What should I feed her now, and how will that change when she is nursing?
- Where should she give birth and what should I have ready?
- Which signs mean I should call you immediately?
- When should the kittens be checked, vaccinated and weaned?
- When is the right time to spay her afterwards?
Related guides
If you are also interested in how cats age, read our cat years to human years chart, which explains life stages from kitten to senior. For the dog equivalent of this guide, see how long are dogs pregnant.
A pregnancy diary you can keep
A short written record is one of the most useful things you can bring to the vet. Keep it in a notebook or phone note and update it whenever something changes.
| Date | What to record |
|---|---|
| Mating date (or best guess) | Who the male was, whether you saw it, how many days she was in season |
| Vet visit date | What was confirmed, any advice on food and parasite control |
| Weekly | Weight if you can weigh her, appetite, behaviour, any discharge |
| Nest chosen | Where and when she started using it |
| Expected window | Day 61 to day 69 from mating, written as calendar dates |
| Birth | Time the first kitten arrived, number born, any concerns |
Writing the expected window as actual dates, such as 1 to 9 December, is much easier to follow than counting days in your head, and it gives the vet a clear picture if you ring in the middle of the night.
Indoor and outdoor cats
An indoor cat’s mating date is usually easy to work out, because you know when she met a male. An outdoor cat may mate without anyone seeing, so the first sign is often a change in her body. If you do not know when she mated, ask your vet to examine her and estimate how far along she is. Ultrasound can show the stage of the pregnancy, and the vet can then give a likely due window instead of a single date. In this case the calculator is still useful for checking your own notes, but the vet’s estimate should come first.
Why we do not give week-by-week feeding amounts
Pregnancy changes how much a cat should eat, and the right amount depends on her weight, body condition, the size of the litter and the stage. We do not publish calorie targets for pregnant or nursing cats because a single table would not fit every cat. Your vet can set a plan and adjust it as she progresses. What we can say is that she should have constant access to fresh water, that food changes should be gradual, and that a sudden loss of appetite is a reason to call the vet.
Reading this in the US, UK, Australia or Canada
Gestation length is biology, so the 63 to 65 day figure holds in every country. What differs is the practical side: the name of your local emergency vet service, the cost of an ultrasound, and the way clinics talk about neutering. In the UK and Australia you will often hear “neutering” for both sexes and “queen” for a female breeding cat; in the US and Canada “spay” is more common. Write down your clinic’s out-of-hours number before the due window starts, because after-hours arrangements vary by area and some clinics refer to a separate emergency hospital.
Quick summary
- A cat is pregnant for about 63 to 65 days from mating, which is roughly nine weeks.
- A normal birth can happen from day 61 to day 69, so treat the result as a window.
- A cat mated on 1 October is due around 3 to 5 December, with a normal range of 1 to 9 December.
- Pink, enlarged nipples and a growing belly are common signs, but an ultrasound confirms pregnancy.
- Ask your vet about food, the birthing space and warning signs, and call early if something looks wrong.
- Use the Cat Pregnancy Due Date Calculator with the best mating date you have.
Frequently asked questions
How long are cats pregnant?
About 63 to 65 days from mating. Births between day 61 and day 69 are usually normal.
How can I tell if my cat is pregnant?
Pink, enlarged nipples often appear around week 3. Your vet can confirm the pregnancy by ultrasound.
What if I do not know the mating date?
Cats can mate more than once, so the date may be uncertain. Enter the most likely date, treat the result as a window and ask your vet to confirm with an ultrasound.
When should I call the vet?
Call your vet if there are no kittens by day 69, if she strains for 30 to 60 minutes without producing a kitten, or if she seems unwell at any point.
Can I feed my pregnant cat normal adult food?
Pregnant and nursing cats need more energy than a normal adult cat, so ask your vet for a feeding plan instead of using the standard adult calculator.
How many weeks is a cat pregnant?
About 9 weeks. The Cat Pregnancy Week Calculator shows which day and week of pregnancy she is in today.
Is a cat pregnancy shorter than a dog pregnancy?
Slightly. Cats carry kittens for about 63 to 65 days from mating, while dogs are about 63 days from ovulation, with puppies arriving 58 to 68 days after mating.
Sources
- Merck Veterinary Manual — Management of Reproduction in Dogs and Cats
- NRC (2006) Nutrient Requirements of Dogs and Cats, National Academies Press
Related calculators
- Cat Pregnancy Due Date CalculatorEstimate when your cat's kittens are due.
- Cat Pregnancy Week CalculatorSee which day and week of pregnancy your cat is in, counted from the mating date, and how many days remain.
- Cat Calorie CalculatorWork out how many calories your cat needs each day, from its weight and life stage.
- Kitten Food CalculatorFind out how many calories a growing kitten needs and how much food that is.
Keep reading
- How Long Are Dogs Pregnant? Timeline and Due Date GuideDog pregnancy lasts about 63 days from ovulation and 58 to 68 days from mating. Learn how to count, what is normal and when to call the vet.
- Cat Years to Human Years: Age Chart (Kitten to 20)A clear cat age chart from kitten to 20 years, how the AAFP/AAHA scale works, the cat life stages and how long cats usually live.