How Long is a Cat Pregnant?
A cat's pregnancy lasts approximately 65 days from conception, which is about 9.5 weeks. The normal range is 60 to 70 days. Breed and litter size can influence the exact length.
Cat Gestation Period Explained
The cat gestation period of 65 days is divided into early, middle, and late stages. During the early stage, fertilized eggs implant in the uterus and embryonic structures begin to form. The middle stage is characterized by rapid organ and skeletal development. In the final stage, the offspring reach near-birth size and the mother prepares instinctively for delivery by seeking a safe, quiet environment.
How to Calculate Cat Due Date
To calculate your cat's due date, simply add 65 days to the confirmed mating or conception date. This gives you the Estimated Due Date (EDD). Since births rarely fall on the exact calculated day, our calculator also shows a 5-day delivery window on either side. Use the form above to get instant results.
If your animal was bred across multiple days, enable the Date Range option. Enter the first and last breeding dates and the calculator will display both the earliest and latest possible delivery dates, giving you the complete expected birth window.
Signs of Pregnancy in Cat
The earliest visible sign is pinking up, where the nipples become rosy and prominent around day 18. Your cat may also become more affectionate, sleep more, and experience mild nausea. A visibly rounded belly generally appears by week 5.
Pregnancy Stages
Week 1 to 2: Fertilization and uterine implantation. Week 3 to 4: Embryonic development; heartbeats detectable by day 25. Week 5 to 7: Rapid growth; kittens take on distinctly feline features. Weeks 8 to 9: Full development complete; mother prepares a nesting area.
Care Tips During Cat Pregnancy
Feed your pregnant cat a high-quality kitten formula diet throughout pregnancy and into lactation. Ensure she has fresh water, a comfortable nesting box in a quiet spot, and minimal stress. Avoid vaccines, parasite treatments, and medications without explicit veterinary approval.