Cat Pregnancy Calculator
Estimate your cat’s due date, pregnancy week, kitten arrival window, and key care milestones from a mating date or estimated conception date.
Calculate Your Cat’s Due Date
Most feline pregnancies last around 63–65 days. This calculator uses 65 days as the average due date and shows a wider estimated birth window.
Your Cat Pregnancy Result
Cat Pregnancy Calculator: Due Date & Kitten Arrival Guide
A cat pregnancy calculator helps estimate when a pregnant cat may give birth. Cat pregnancy, also called feline gestation, is usually much shorter than human pregnancy. In many cases, kittens arrive around nine weeks after mating. Because cats can mate more than once during a heat cycle, the exact conception date can be uncertain, so this calculator provides both a likely due date and an estimated delivery window.
To use the tool, enter the mating date or your best estimate of conception. The calculator adds the selected gestation length and then shows the expected due date, pregnancy day, pregnancy week, and current stage. This can help you plan a nesting area, food changes, vet visits, and quiet space before labor begins.
Use the result as a planning guide only. A veterinarian can confirm pregnancy, estimate litter progress, check the queen’s health, and advise you if the due date seems unusually early or late.
Cat Pregnancy Timeline Chart
| Pregnancy Stage | Approx. Days | Common Signs | Care Tips |
|---|---|---|---|
| Early pregnancy | 1–21 | Mild appetite changes, less obvious physical signs | Keep routine stable and avoid unnecessary stress. |
| Confirmation period | 22–35 | Pink nipples, possible appetite increase, gentle weight gain | Schedule a vet check if pregnancy is suspected. |
| Visible growth | 36–50 | Rounder belly, more noticeable weight gain | Offer quality food and fresh water; avoid rough handling. |
| Late pregnancy | 51–60 | Nesting behavior, lower activity, larger abdomen | Prepare a quiet, warm nesting box. |
| Labor window | 61–72 | Restlessness, grooming, seeking privacy, possible milk | Observe calmly and call a vet if labor seems abnormal. |
How to Use This Cat Due Date Calculator
- Choose the mating date or estimated conception date.
- Select the average gestation length, or enter a custom number of days.
- Click Calculate Due Date.
- Review the due date, estimated kitten arrival window, pregnancy week, and care advice.
Cat Pregnancy Calculator FAQs
How long are cats pregnant?
Most cats are pregnant for about 63 to 65 days. Some cats may deliver earlier or later, so this tool also shows a wider estimated birth window.
What date should I enter if my cat mated more than once?
Use the first known mating date for an early estimate and the last known mating date for a later estimate. The real due date may fall between those results.
Can this calculator confirm pregnancy?
No. It only estimates dates. A veterinarian can confirm pregnancy and help check whether the cat and kittens are healthy.
What are signs my cat is close to labor?
Common signs include nesting, restlessness, reduced appetite, more grooming, seeking privacy, and sometimes milk production.
When is cat birth an emergency?
Contact a vet urgently if your cat has heavy bleeding, green or foul discharge before kittens, extreme weakness, strong contractions without delivery, or obvious distress.