Cat Pregnancy Calculator: Due Date & Timeline

Wondering when your cat is due? Feline pregnancy (gestation) lasts about 63–65 days on average, with a normal range of 58–67 days. Enter the mating date and the calculator estimates the due date and maps a week-by-week timeline of what to expect.

How the cat pregnancy calculator works

Cat gestation is counted from the date of mating. The most likely birth date is around day 63, with a normal window from roughly day 58 to day 67. The calculator marks the earliest, most-likely and latest dates, then highlights which stage of the nine-week pregnancy you're currently in.

Each week brings recognisable changes — from 'pinking up' of the nipples around week three to nesting behaviour and a temperature drop just before labour.

How to use it

Select the mating date. Pick the date your cat mated (or the best estimate).
Calculate. See the estimated due date and the earliest-to-latest birth window.
Follow the timeline. Use the week-by-week guide to know what to expect and when to prepare a kittening box.

Key takeaways

Feline gestation averages 63–65 days (range 58–67).
Day 63 from mating is the typical due date.
Nesting, restlessness and a temperature drop signal labour is near.

Frequently asked questions

How long are cats pregnant?

On average 63–65 days (about nine weeks), with a normal range of 58–67 days from mating to birth.

What are the first signs a cat is pregnant?

Around week three the nipples often 'pink up' and enlarge. Later signs include a rounding belly, bigger appetite and weight gain; a vet can confirm by palpation or ultrasound.

How can I tell when my cat is about to give birth?

In the final days many queens nest, become restless, lose appetite and show a drop in body temperature. Prepare a quiet, warm kittening box in advance.

How many kittens do cats usually have?

Litters typically range from 1 to 6 kittens, with about 4 being common. First-time mothers often have smaller litters.