Estimates a cat’s due date from the breeding date, using the average feline gestation length.
How it works
64 days (the average of the commonly cited 63-65 day range) is added to the breeding date to estimate the due date, alongside a wider typical range.
What this does not include
This does not include dogs — for canine gestation, use this site’s dog pregnancy calculator instead, which uses a different average gestation length.
How to use this calculator
- Enter the breeding date.
A worked example
A breeding date of January 1 gives an estimated due date around March 6 — 64 days later, the middle of the typical 63–65 day feline gestation window.
What the variables mean
| Variable | Meaning |
|---|---|
| Breeding date | Date of mating |
| Due date | Estimated date of delivery, roughly 64 days later |
Edge cases worth knowing
This is an estimate, not a guarantee. Feline gestation commonly falls between 63 and 65 days, but litter size, breed, and individual variation can shift the actual delivery date.
A cat approaching or past the estimated due date without labor starting should be seen by a veterinarian — this calculator provides a planning estimate, not a substitute for veterinary monitoring.
Frequently asked questions
How accurate is this estimate?
It’s a starting point based on average gestation length — the exact breeding/ovulation date and individual variation mean the actual delivery date can fall anywhere in the typical range shown.
How long are cats typically pregnant?
Around 63 to 65 days on average, with a broader typical range of about 61 to 72 days.
Should I confirm pregnancy with a vet?
Yes — a veterinarian can confirm pregnancy and monitor progress, which this calculator’s date estimate cannot replace.
