Pregnancy In Dogs Calculator
Estimate your dog's due date and track pregnancy milestones based on breeding date or first mating.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to use the Pregnancy in Dogs Calculator
- Enter the first mating date – Click the date input and select the date when mating first occurred. The date cannot be in the future.
- Select your dog’s breed size – Choose from the dropdown:
- Small (under 10 kg) – 63 days gestation
- Medium (10–25 kg) – 65 days gestation
- Large (over 25 kg) – 67 days gestation
- Click “Calculate Due Date” – The calculator will show the estimated due date and a list of pregnancy milestones with approximate dates.
- Review the results – The due date is displayed prominently, and milestones include key events like implantation, heartbeat detection, and whelping preparation.
Note: All dates are calculated from the mating date. Gestation length varies by breed size, so select the correct size for accuracy.
Previous Results
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Frequently Asked Questions
The calculation is based on average gestation periods (63-67 days depending on breed size). Actual dates may vary by a few days. Consult your veterinarian for precise monitoring.
We categorize dogs into small (under 10 kg), medium (10-25 kg), and large (over 25 kg). Gestation length slightly increases with size.
Yes, but note that individual variations exist. The calculator provides an estimate; always consult a vet for pregnancy management.