Biology Calculators
Cat Pregnancy Calculator
Estimate your cat's due date from mating date, plus weekday and full healthy delivery date range.
Use this cat pregnancy calculator to estimate your cat's due date from mating date.
Average cat gestation is 63 days (about 9 weeks), so due date is calculated as mating date + 63 days.
Healthy delivery usually falls in a range of 58 to 71 days after mating, so this calculator also shows earliest and latest likely delivery dates.
How long are cats pregnant? Approximately 63 days, 9 weeks, 2.07 months, 0.1725 years, 1512 hours, or 5,443,200 seconds.