Tools – Xperts Pet

Track your dog's pregnancy week by week.

🤰Dog Pregnancy Calculator

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What Is the Dog Pregnancy Calculator?

The Dog Pregnancy Calculator works out your dog's estimated due date from the mating date. Canine gestation averages 63 days from conception but varies by 3-5 days depending on breed size.

Every result is based on published veterinary research and veterinarian-reviewed formulas — not generic averages. Completely free, works instantly, requires no account or sign-up.

How to Use This Calculator

Enter Your Dog's Details

Fill in the fields above — weight, age, or breed size. Every field has a clear label.

Click Calculate

Press the button to get your instant result. No page reload, no account needed.

Review Your Result

Your result appears immediately with the primary answer and additional context.

Use the Information

Share or save your result. Always discuss health results with your veterinarian.

How It Works

Canine gestation typically lasts 58-65 days from mating. Small breeds: 58-62 days. Large/giant breeds: 63-65 days. The calculator adds the appropriate gestation period to the mating date and shows the current week of pregnancy.

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Veterinary Research

Every formula is from peer-reviewed veterinary studies and clinical guidelines.

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Instant Results

No page reload, no waiting, no account needed. Results appear immediately.

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100% Private

All calculations happen in your browser. Nothing is stored or shared.

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Always Free

Every calculator on Xperts Pet is completely free — no premium tier, no catch.

Frequently Asked Questions

On average 63 days (about 9 weeks) from mating. Small breeds: 58-62 days. Large breeds: 63-65 days.

Week 3-4: Possible morning sickness. Week 4-5: Enlarged abdomen, weight gain. Week 6-7: Visible puppy movement. Week 8-9: Nesting behaviour, milk production.

Small breeds: 1-4. Medium: 4-8. Large: 6-12. Ultrasound at week 4-5 can confirm litter size.

Day 25-35 for ultrasound. Day 45 for X-ray to count puppies. Week 8-9 to prepare for whelping.

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Veterinary Disclaimer

These calculators provide general guidance based on veterinary formulas. Results should not replace professional veterinary advice. Always consult a qualified veterinarian before making medical or dietary decisions for your pet.