Gestation Calculator
Cat Pregnancy Planner
Cat Gestation Calculator
Enter the first day of mating and, if known, the last day of mating to generate a complete pregnancy timeline. The calculator includes pink-up dates, scan reminders, weekly trimester guidance, due-date range, and kitten milestone dates after birth.
Enter mating details
Use the first day of mating as the key date. Add the last day if mating took place over several days.
Useful when mating happened across more than one day.
Your timeline
Choose a mating date to generate the pregnancy and kitten schedule.
Conception window
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Based on entered mating dates
Due date range
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63 to 67 days from mating
Scanning window
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Suggested 28 to 32 days
Ready to leave
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13 weeks after birth
Pregnancy milestone timeline
From mating to birthWeekly trimester overview
At a glanceKitten milestone dates
After birth
Preparation reminder
Have the kittening area ready before the nesting period begins, including a quiet warm space, clean bedding, scales, and your vet’s contact details.