by Mark Enhanced Cat Pregnancy Calculator Estimate your cat’s due date and track pregnancy stages. Mating Date ? Select the date of successful mating (e.g., 2025-04-01). Gestation Period (days) ? Average is 63 days; range is 58–71 days. Calculate Reset Enter the mating date, then click “Calculate”. JavaScript is disabled. Please enable it to use the calculator. Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading... Related