Dog Pregnancy Calculator – Estimate Your Dog’s Due Date for Free
Easily calculate your dog’s expected delivery date by entering the mating date. Know how long your dog’s pregnancy lasts, key stages, and what to expect before labor.
Dog Pregnancy Calculator
Select the date when your dog was mated to estimate her expected due date.
How to Use the Dog Pregnancy Calculator
Learn how to use our free dog pregnancy calculator to estimate your doggie’s due date in just a few easy steps.
Select the Mating Date
Choose the date when your dog was mated or bred. The calculator will automatically begin estimating her due date based on this starting point.
See the Estimated Due Date
Instantly see your dog’s predicted delivery date after selecting the mating day. The result is based on an average 63-day pregnancy period.
Track the Pregnancy Stages
Follow each stage of your dog’s pregnancy with helpful milestones and care tips. Stay informed with a detailed timeline to prepare for a healthy delivery.
How to Calculate Dog's Dute Date?
The canine due date calculator estimates your dog’s due date based on the typical canine gestation period. Most dogs are pregnant for about 63 days (around 9 weeks) after mating. By adding 63 days to the date of mating, you can predict the approximate delivery date. The dog gestation calculator uses the following formula: Estimated Due Date = Date of Mating + 63 days Keep in mind that: • Smaller breeds may deliver a few days earlier. • Larger breeds or late ovulation may extend the pregnancy slightly. • Always confirm with your vet for the most accurate results.
How Long Are Dogs Pregnant?
Most dogs are pregnant for around 63 days, but the exact gestation period can differ by breed, size, and individual health. The following table shows common canine pregnancy lengths to help you use the Dog Pregnancy Calculator more accurately when estimating your dog’s due date.
| Breed Size | Average Gestation Period | Typical Range | Notes |
|---|---|---|---|
| Small Breeds | ~61 days | 58–63 days | Tend to give birth slightly earlier due to faster metabolism. |
| Medium Breeds | ~63 days | 60–65 days | Average duration for most dogs. |
| Large Breeds | ~65 days | 62–66 days | May carry puppies a few days longer, especially with larger litters. |
Dog Pregnancy Stages Week by Week
Dog pregnancy typically lasts around 63 days, but this can vary slightly depending on the breed, litter size, and the exact time of ovulation. Understanding each week of your dog’s pregnancy helps you monitor her health, spot early signs of labor, and prepare for whelping with confidence. During the first few weeks, fertilization and implantation occur, and most dogs show only subtle signs like appetite or mood changes. By week 4 to week 6, the embryos develop rapidly, and your vet may confirm the pregnancy through ultrasound. As you reach week 7 and beyond, your dog’s belly becomes visibly larger, and she may start nesting behavior as her body prepares for birth. The dog pregnancy week-by-week chart below outlines every stage of gestation — from conception to delivery — with key milestones and practical care tips. Use it as a reliable reference to ensure a safe, smooth, and healthy pregnancy for your dog and her puppies.
| Week | Stage | What To Do |
|---|---|---|
| Week 1–2 | Fertilization & Implantation | Keep her routine normal and feed a balanced diet. Avoid vaccinations or medications unless prescribed. |
| Week 3–4 | Early Development | Watch for subtle signs like appetite changes. Provide calm rest and avoid strenuous activity. |
| Week 5–6 | Visible Changes | Increase food portions slightly. Schedule a vet check or ultrasound to confirm pregnancy. |
| Week 7–8 | Preparation for Birth | Prepare a clean, quiet whelping area. Reduce activity and monitor for nesting behavior. |
| Week 9 | Whelping | Watch for restlessness or drop in body temperature — labor may begin soon. Contact your vet if delivery delays. |
Early Signs of Dog Pregnancy
During the first few weeks after mating, it can be hard to tell if your dog is pregnant. However, there are some early physical and behavioral signs that can help you identify possible pregnancy before a vet visit.
Changes in Appetite
Your dog may eat less or show fluctuating appetite in the first weeks. This is similar to “morning sickness” and usually stabilizes as pregnancy progresses.
Behavioral Shifts
Pregnant dogs might become more affectionate or, conversely, more withdrawn. Watch for nesting behaviors or unusual clinginess.
Enlarged Nipples
The nipples become slightly swollen and darker in color. In later weeks, you may notice a small amount of clear discharge.
Reduced Activity & Fatigue
A pregnant dog often seems tired, prefers rest, and avoids vigorous play. This is due to hormonal changes and early fetal development.
Signs of Labor & Whelping Preparation
As your dog approaches her due date, several physical and behavioral signs indicate that labor is near. Understanding these stages helps you prepare a safe, calm environment for whelping.
1. Physical Signs of Labor
• Drop in body temperature (below 99°F / 37.2°C) within 24 hours before labor. • Restlessness, pacing, or scratching the nesting area. • Refusal to eat and frequent licking of the vulva.
2. Preparing for Whelping
• Set up a quiet, clean, and warm whelping box lined with washable bedding. • Keep towels, gloves, a heat source, and your vet’s contact info ready. • Ensure the area is free from drafts and stress.
3. During Delivery
• Contractions and visible straining indicate active labor. • Puppies usually arrive 20–60 minutes apart. • Contact your vet if labor lasts over 2 hours without a puppy, or if your dog seems distressed.
Postpartum Care for Mother and Puppies
Proper postpartum care ensures a smooth recovery for the mother and healthy growth for the puppies. Here are the essentials every dog owner should know. Calcuflare’s dog pregnancy calculator helps you prepare not only for delivery but also for the crucial postpartum period.
Care for the Mother
Keep the mother warm, clean, and well-fed. Provide fresh water and nutrient-rich meals, and monitor for any signs of infection or fatigue.
Care for the Puppies
Ensure puppies nurse regularly and stay warm. Avoid overhandling and check that each one is gaining weight daily.
Vet Check & Follow-Up
Schedule a vet visit within 48 hours to assess the mother and litter. Discuss deworming, vaccination, and postnatal recovery care.
More Pet Calculators from Calcuflare
Try other popular tools like the cat pregnancy calculator, puppy growth chart, and dog age calculator. Calcuflare makes it easy to estimate, plan, and care for your pets with accurate, science-based calculations.
Calculate Your Dog’s Due Date Now
Keep your dog and her puppies healthy — use our calculator to track pregnancy progress.
FAQs of Dog Pregnancy Calculator
Learn how to use Calcuflare’s canine due date calculator, estimate pregnancy length, and prepare for your dog’s delivery with these quick answers.
How does Calcuflare’s dog due date calculator work?
Our dog due date calculator estimates your dog’s expected whelping day using the typical 63-day gestation period from the date of mating. Simply enter the breeding date, and Calcuflare’s tool predicts when your dog is likely to give birth.
What if I don’t know the exact mating date?
If you’re unsure when mating occurred, try to recall the start of your dog’s heat cycle or use the date when she was most receptive to males. The canine due date calculator will still give a close estimate, but your vet can confirm pregnancy timing more accurately via ultrasound.
How do I calculate my dog’s pregnancy length manually?
Most dogs are pregnant for around 63 days, or about nine weeks. You can calculate the expected delivery date by adding 63 days to the mating date—or just use Calcuflare’s dog pregnancy due date calculator for instant results.
How many puppies can my dog have?
The number of puppies depends on the breed, size, and health of your dog. Smaller breeds may have 1–4 puppies, while larger breeds can have 6–12 or more. While our dog due date estimator doesn’t predict litter size, your vet can check via ultrasound around day 25–30.
How accurate is the Calcuflare pregnancy in dogs calculator?
The calculator provides an estimate based on the average canine gestation period. Actual whelping may occur a few days earlier or later. For the most precise timing, confirm with a veterinarian using ultrasound or hormone testing.
Why choose Calcuflare’s canine due date calculator?
Calcuflare’s dog pregnancy calculator is fast, easy to use, and mobile-friendly. It helps dog owners and breeders plan ahead for whelping, track pregnancy progress, and prepare safely for new puppies—all in one reliable tool.