Gestation & Due-Date Calculator
Enter a mating date and species to see the due-date window and key milestones.
Species
Cat
Estimated due date
Mon, 14 Sept 2026
Likely window: Sat, 12 Sept 2026 → Wed, 16 Sept 2026
Average gestation for cat: 65 days (63–67)
Key milestones
- Day 21SatNipples "pink up"; vet can palpate
- Day 28SatUltrasound confirms pregnancy
- Day 42SatX-ray gives accurate kitten count
- Day 60WedSet up the nesting box
Gestation lengths vary by breed and individual. Use this as a planning guide and confirm with your veterinarian.
Preparing for a birth? Read our guides on cat pregnancy and dog whelping.
Track every pregnancy automatically
AllBreeds counts down to every birth with milestones and reminders across your whole program.
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