Cat Pregnancy Calculator

Category: Biology
- May 14, 2025
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Track and plan for your cat's pregnancy with this gestation calculator. Calculate the expected delivery date and key milestones during your queen's pregnancy.

Breeding Information

days
Average is 63 days (range: 58-72 days)
years

Display Options

About Cat Pregnancy

Cats (queens) have an average gestation period of approximately 63 days (about 9 weeks), though this can range from 58 to 72 days. First-time mothers may have slightly longer pregnancies, while experienced queens may deliver a bit earlier.

Key Pregnancy Milestones
  • Days 1-7 (Week 1): Fertilization and early embryonic development
  • Days 8-14 (Week 2): Embryos implant in the uterine wall
  • Days 15-21 (Week 3): Embryos begin developing distinct features
  • Days 22-28 (Week 4): Nipples begin to pink up, morning sickness may occur
  • Days 29-35 (Week 5): Noticeable weight gain, abdominal swelling begins
  • Days 36-49 (Weeks 6-7): Kittens begin to move, belly becomes obviously distended
  • Days 50-58 (Week 8): Mammary glands enlarge, queen begins nesting behavior
  • Days 59-63+ (Week 9): Final preparation for birth, milk may be expressible
Delivery Preparation

As delivery approaches, prepare a quiet, secluded nesting box with clean, soft bedding. Have these supplies ready:

  • Clean towels and blankets
  • Heating pad or hot water bottle (covered and on low setting)
  • Sterilized scissors (for emergency cord cutting)
  • Iodine for umbilical cords
  • Kitchen or postal scale (to weigh kittens)
  • Record-keeping materials
  • Veterinarian contact information
Signs of Approaching Labor
  • Restlessness and pacing
  • Decreased appetite
  • Body temperature drop (below 100°F/37.8°C)
  • Intense grooming of genital area
  • Seeking seclusion or anxious attention-seeking
  • Vocalizing more than usual
  • Clear vaginal discharge
  • Visible contractions

Formula Used in the Cat Pregnancy-calculator/">Pregnancy Calculator

Expected Delivery Date = Mating Date + Gestation Length (in days)

Days Remaining = Expected Delivery Date − Today’s Date

Pregnancy Week = ⌊(Today’s Date − Mating Date) ÷ 7⌋ + 1

What Is the Cat Pregnancy Calculator?

The Cat Pregnancy Calculator is a helpful tool designed to estimate key dates and stages throughout a cat’s pregnancy. Whether you're an experienced breeder or a concerned pet owner, this tool simplifies planning for your queen’s gestation by projecting the expected delivery date, current pregnancy stage, and milestone events.

How the Calculator Works

By inputting the mating date, selecting your cat’s breed, and confirming gestation details, the calculator provides a personalized pregnancy timeline. It automatically considers typical gestation ranges and offers the flexibility to adjust values based on breed-specific norms.

How to Use the Cat Pregnancy Calculator

  • Select the date your cat mated using the date picker.
  • Choose your cat’s breed from the dropdown menu. This helps suggest an average gestation period for that breed.
  • Enter the gestation length (typically 63 days) or accept the suggested value.
  • Provide your queen’s age in years.
  • Adjust display preferences to view all milestones or calendar format.
  • Click Calculate to generate the pregnancy results.
  • Review the expected delivery date, current week of pregnancy, and a timeline of events.

Why This Tool Is Useful

Knowing when your cat is due and what changes to expect helps you prepare for a smooth birthing process. This calculator:

  • Reduces uncertainty by giving you a projected kitten birth date.
  • Displays current pregnancy stage to monitor development.
  • Offers a clear, week-by-week timeline of physical and behavioral changes.
  • Helps prepare a proper birthing area and necessary supplies in time.

Who Should Use This Calculator?

  • Pet owners with pregnant cats
  • Cat breeders tracking gestation
  • Veterinary technicians educating clients
  • Feline rescue staff monitoring queen care

FAQs

How long is a cat’s pregnancy?

The average gestation period for cats is 63 days, though it can range from 58 to 72 days depending on factors like breed and age.

Does breed affect gestation length?

Yes, certain breeds may have slightly different average gestation lengths. For example, Persian and Maine Coon cats often carry slightly longer than others. The calculator adjusts this when you select a breed.

What if I don’t know the exact mating date?

Try to estimate as closely as possible based on observed mating behavior or the date your cat escaped or had contact with a male.

Can I use this for dogs or Other animals?

This calculator is built specifically for feline pregnancies. For dogs, check out the Dog Pregnancy Calculator, which works similarly to predict a puppy’s due date.

Are there other tools like this?

Yes, similar tools include the Cat Calorie Calculator for dietary planning, the Cat Age Calculator to compare feline age to human years, and the Punnett Square Calculator for exploring trait inheritance. Each serves a different aspect of pet care or genetics education.

Final Thoughts

The Cat Pregnancy Calculator offers a practical and simple way to manage your queen’s gestation journey. From projecting delivery dates to recognizing pregnancy milestones, it helps you stay informed and ready for the arrival of new kittens.