Cat Tools
Cat Pregnancy Calculator
Estimate your cat's due date from a mating date and learn the normal gestation window, pregnancy timeline, and when to call a vet.
Estimate Your Cat's Due Date
Enter the known or estimated mating date. The calculator uses 63 days as a common average and also shows a wider possible window.
Formula Used
Estimated due date = mating date + 63 days. Possible normal window is approximately 58–67 days.
This calculator is a date estimate only. Pregnancy, labor, and kitten health should be discussed with a veterinarian.
Cat Pregnancy Timeline
Cat pregnancy is short, so changes can happen quickly. Use this timeline as a general guide.
| Stage | What may happen |
|---|---|
| Week 1–2 | Fertilization and early embryo development. Physical signs may be subtle or absent. |
| Week 3 | Nipples may become pinker and more noticeable. Appetite may start changing. |
| Week 4–5 | Belly may begin to enlarge. A veterinarian may be able to confirm pregnancy. |
| Week 6–7 | Weight gain becomes more visible. The queen may need more calories and quiet rest. |
| Week 8–9 | Nesting behavior, restlessness, and milk development may appear as labor gets closer. |
How to Prepare for Kittens
A due date estimate is useful, but preparation and veterinary guidance matter more than the exact calendar day.
Confirm pregnancy with a vet
A veterinarian can confirm pregnancy, estimate health risks, and advise on nutrition and parasite control.
Prepare a nesting area
Offer a quiet, warm, clean box with soft bedding in a low-traffic area.
Do not give random medications
Some medications and supplements are unsafe during pregnancy. Ask your vet first.
Watch for emergency signs
Heavy bleeding, distress, fever, collapse, or prolonged straining needs urgent veterinary care.
Cat Pregnancy Calculator FAQ
How long are cats pregnant?
Cat pregnancy usually lasts about 63 to 65 days, but a normal range can be around 58 to 67 days.
How accurate is a cat pregnancy calculator?
It is an estimate based on the mating date. Ovulation timing, multiple matings, and uncertain dates can shift the real due date.
When should I take a pregnant cat to the vet?
Schedule a veterinary check if pregnancy is suspected, especially if the cat is young, underweight, sick, or has unknown breeding history.
What are signs a cat is close to labor?
Possible signs include nesting, restlessness, reduced appetite, seeking privacy, milk production, and a drop in body temperature.