Estimated due date, with a range and a milestone timeline, from the mating date.
In dogs, pregnancy normally lasts between 58 and 68 days from mating, averaging 63 days (sources: American Kennel Club and VCA Animal Hospitals). Duration measured from OVULATION is much more consistent across breed sizes, close to 63 days; the variation seen from the mating date mostly comes from the difficulty of pinpointing the exact ovulation day, which can occur a few days after mating. Very small breeds tend to deliver closer to the lower end of the range, while large or giant breeds trend toward the upper end. In cats, pregnancy lasts between 61 and 65 days, also averaging 63 days (VCA Animal Hospitals). In both species, pregnancy can be confirmed by ultrasound starting around day 21-25, and a reliable litter count by X-ray is usually done after day 40-45, once the fetal skeletons are calcified enough to show up on the scan.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/dog-cat-pregnancy-calculator"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Dog & Cat Pregnancy Calculator"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
On average 63 days from mating, within a range of 58 to 68 days according to the AKC and VCA Animal Hospitals. The actual duration from ovulation is more consistent (~63 days); the variation mostly comes from uncertainty about the exact ovulation day.
Veterinary notice: this calculator is educational and does not replace care from a licensed veterinarian. Confirm the pregnancy and monitor the female with appropriate exams (ultrasound, X-ray) and regular checkups.
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