Cat Due Date Calculator — Instantly Predict Your Cat’s Delivery Day

The journey of cat pregnancy is an exciting time, but for pet owners and breeders alike, the big question is always: “When will the kittens arrive?” Guessing can lead to stress and unpreparedness. Our Cat Due Date Calculator takes the mystery out of the process, giving you an accurate prediction so you can prepare with confidence for your new arrivals.

By simply knowing the mating date, you can unlock a detailed cat pregnancy week by week timeline and know exactly what to expect.

How the Cat Due Date Calculator Works

Our tool simplifies the prediction process, giving you a clear due date range in seconds.

Simple Input Requirements

For the most accurate results, the calculator needs just one key piece of information:

• The Date of Mating: The single most important date for an accurate prediction.
• Optional: For cats with multiple mating sessions over a few days, you can enter the first and last date to get a broader due date window.

Calculation Formula

A cat’s gestation period is remarkably consistent. Our cat pregnancy calculator uses the standard veterinary formula:
Due Date = Mating Date + 63 Days

We also calculate the full natural range (58-71 days) to give you a complete picture of when to expect delivery.

Step-by-Step Example

Let’s say your cat mated on April 10th.

1. Input: You enter “April 10” into the calculator.
2. Calculation: The tool adds 63 days to April 10th.
3. Output: Your cat’s estimated due date is June 12th.
   • The results will also show the full expected range: from June 7th (58 days) to June 20th (71 days).
   • It will display the current week of gestation based on today’s date.

Cat Pregnancy Timeline and Key Milestones

Watching a cat pregnancy week by week is fascinating. Here’s what to expect as you use our cat due date calculator week by week feature:

• Weeks 1-2: Fertilization and early cell development. No outward signs.
• Week 3 (Around 21 days): A major milestone called “pinking up” occurs—the queen’s nipples become enlarged and pink. She may experience morning sickness.
• Weeks 4-5: A veterinarian can confirm pregnancy via ultrasound. Her appetite increases, and a slight weight gain is noticeable.
• Week 6: The pregnancy becomes very obvious. Her belly is rounded, and she may start “nesting.”
• Weeks 7-8: You may be able to feel the kittens moving. She will spend more time resting and seeking quiet spots.
• Week 9 (Due Week): She may become restless, vocal, and lose her appetite as labor approaches. Cat due date symptoms like nesting behavior intensify.

What to Expect During Cat Pregnancy

Beyond the timeline, proper care is essential.

• Signs & Behavioral Changes: Look for increased affection, nipple changes, increased appetite, and a swollen abdomen.
• Basic Care: Provide high-quality kitten food for extra nutrition, ensure a calm and safe environment, and schedule a vet check to confirm pregnancy and health.
• Preparing for Delivery: As the due date from the cat due date calculator approaches, set up a quiet “kittening box” with soft blankets. Have your vet’s emergency number handy and watch for the signs of imminent labor.