Dog Pregnancy Calculator (Due Date & Week-by-Week)
This Dog Pregnancy Calculator estimates where your dog is in her pregnancy, an approximate due date and what to expect at each stage. It’s a simple way to understand the timeline and prepare your home, without replacing professional veterinary care.
Estimate your dog’s pregnancy timeline
Enter the mating date (or the first date mating could have happened) to see:
- Estimated gestation day and pregnancy week
- Approximate due date window
- Key signs that often appear around this stage
Estimate Your Dog’s Due Date
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This tool is for educational purposes only and cannot confirm pregnancy or puppy health. Always consult a veterinarian for diagnosis, ultrasound, X-rays and any medical decisions.
Example
Mating ~35 days ago
- Gestation day: around day 35–37.
- Stage: mid-pregnancy (roughly week 5).
- Common signs: nipple enlargement, abdominal rounding, more resting.
How to read your dog’s pregnancy estimate
1. Due dates are a range, not a single day
Most dogs whelp around day 63 from mating, but normal deliveries can happen a few days earlier or later. The calculator gives a window, not a guaranteed date.
2. Signs vary between dogs and litters
Some dogs show very clear nesting, appetite changes or clinginess, while others stay subtle. Use the timeline as a guideline and watch for patterns in your individual dog.
3. Vet monitoring is still essential
A veterinarian can confirm pregnancy, check for complications, estimate litter size closer to term, and advise you on whelping preparation and when to seek emergency help.
Want a week-by-week timeline?
After using the calculator, read the full pregnancy guide to see symptoms, vet checks and care tips for each week from mating to whelping.