Cat Pregnancy Calculator

By the DueBarn team. Updated November 6, 2026.

Enter the breeding date to get the expected kittening date, the normal range, and how far along your cat is today.

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Expected kittening date
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Earliest normal
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Latest normal
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Today

How long is a cat pregnant?

Cats are pregnant for about 63 to 65 days, nine weeks, with normal births from about day 61 to day 67. Because cats ovulate when they mate and often mate several times over a few days, the exact start date can be uncertain by a day or two.

Due date = mating date + 64 days

WeekWhat you may notice
2 to 3Nipples turn darker pink and larger ("pinking up")
4Vet may feel kittens; ultrasound confirms
5 to 6Belly grows, appetite rises
7 to 8Nesting, restlessness; kittens visible on X-ray
9Labor
Labor signs. Restlessness, panting, loud vocalizing and kneading the nest. Call your vet if she strains for more than 30 minutes without a kitten or more than 2 hours pass between kittens.

How can I tell if a cat is pregnant?

The first visible sign is pinking up: around weeks 2 to 3 her nipples turn darker pink and enlarge. Weight gain, a rounder belly from about week 5, a bigger appetite and nesting follow. A vet can confirm by ultrasound from about day 25.

Frequently asked questions

How long is a cat pregnant?

About 64 days on average, normally 61 to 67 days.

How many kittens do cats have?

Usually 4 to 6, though first litters are often smaller.

Can a cat get pregnant again right after giving birth?

Yes. Cats can come back into heat a few weeks after giving birth, even while nursing.

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Last updated November 6, 2026. Results are estimates for planning. See how we build and check our tools in our editorial policy. Found an error? Tell us.