Dog PregnancyDue Date Calculator
Enter your dog's mating date to instantly calculate the estimated due date, birth window, and a complete week-by-week pregnancy timeline. The most accurate dog gestation calculator available — free.
Whether you're asking when will my dog give birth, looking for a dog whelping date calculator, or tracking your dog's canine pregnancy timeline — get your answer in seconds.
Pregnancy Calculator
58–68 day gestation window
63 days
Average
Day 58
Earliest
Day 68
Latest
Your Results Will Appear Here
Enter the mating date on the left and click "Calculate Due Date" to get your dog's complete pregnancy timeline.
Due Date
Birth Window
Week Timeline
8,000+ breeders trust this tool
"The week-by-week timeline is incredibly helpful. I use this every litter to track progress and know exactly when to prepare the whelping box."
Rachel T.
Golden Retriever Breeder
"So much better than trying to count days on a calendar. The birth window feature saved me from panicking when my dog delivered on day 61."
Marcus D.
First-time Breeder
How Long Are Dogs Pregnant?
The canine gestation period lasts approximately 58 to 68 days, with an average of 63 days from the date of mating. This is roughly 9 weeks — significantly shorter than human pregnancy. Understanding the dog pregnancy timeline is essential for breeders and dog owners to prepare properly for whelping.
Unlike humans, dogs can mate over several days during their fertile window, which means the actual conception date may differ from the mating date. This is why our dog gestation calculator provides a birth window (days 58–68) rather than a single fixed date — giving you the full range of when your dog may give birth.
Earliest Birth
Day 58
~8.3 weeks
Average Birth
Day 63
~9 weeks
Latest Birth
Day 68
~9.7 weeks
Canine Pregnancy Timeline — Week by Week
This dog pregnancy due date chart shows what happens each week of gestation and what signs to watch for. Use this alongside our calculator to track your dog's pregnancy progress.
| Week | Days | Stage | Signs & Actions |
|---|---|---|---|
| Week 1 | Days 1–7 | Fertilization | No visible signs |
| Week 2 | Days 8–14 | Implantation | Possible mild lethargy |
| Week 3 | Days 15–21 | Organ Formation | Morning sickness, appetite changes |
| Week 4 | Days 22–28 | Rapid Growth | Abdomen firms, vet can confirm via ultrasound |
| Week 5 | Days 29–35 | Sex Determination | Visible weight gain, increased appetite |
| Week 6 | Days 36–42 | Coat & Color | Abdomen enlarges, nipples swell |
| Week 7 | Days 43–49 | Pre-Whelping | X-ray can count puppies, prepare whelping box |
| Week 8 | Days 50–56 | Nesting Begins | Nesting behavior, milk production starts |
| Week 9 | Days 57–68 | Birth Window | Temperature drops, labor imminent |
* Timeline based on average 63-day gestation. Individual dogs may vary.
Signs Your Dog Is Ready to Give Birth
Knowing when your dog will give birth requires monitoring specific physical and behavioral signs from day 58 onward. Here are the key indicators to watch for:
Temperature Drop
Most ReliableBody temperature falls below 99°F (37.2°C). This is the most reliable sign — birth typically follows within 12–24 hours. Take temperature twice daily from day 58.
Nesting Behavior
24–48 hrs beforeThe dog seeks a quiet, secluded spot and rearranges bedding obsessively. This instinctive behavior begins 24–48 hours before labor.
Loss of Appetite
12–24 hrs beforeMost dogs refuse food in the 12–24 hours before labor. Do not force feeding. Ensure fresh water is always available.
Restlessness & Panting
Labor startingThe dog becomes visibly anxious, paces, pants, and cannot settle. This is Stage 1 labor — uterine contractions have begun but puppies are not yet visible.
Frequently Asked Questions
Dogs are pregnant for approximately 58–68 days, with an average of 63 days (9 weeks) from the date of mating. The exact duration depends on the individual dog, breed size, and when ovulation occurred relative to mating. Small breeds tend to deliver slightly earlier, while large breeds may go closer to 65 days.
A pregnancy lasting beyond 68 days is considered overdue and requires immediate veterinary attention. This can indicate fetal distress, uterine inertia, or an incorrect mating date. If your dog has not given birth by day 68, contact your vet immediately — a C-section may be necessary to save the puppies.
Key signs that whelping is imminent include: (1) Body temperature drops below 99°F (37.2°C) — this typically occurs 12–24 hours before labor. (2) Nesting behavior — the dog seeks a quiet, secluded spot and rearranges bedding. (3) Restlessness, panting, and loss of appetite. (4) Visible abdominal contractions. (5) Clear or slightly bloody vaginal discharge. Monitor temperature twice daily from day 58 onward.
This calculator uses the standard veterinary gestation formula of 63 days from mating, with a birth window of 58–68 days. It is highly accurate when the mating date is known precisely. However, if mating occurred over multiple days, use the first mating date for the earliest estimate and the last mating date for the latest estimate. Ultrasound at week 4 and X-ray at week 7 provide the most accurate confirmation.
Essential whelping preparations include: (1) A clean whelping box with pig rails to prevent crushing. (2) Clean towels and newspaper for bedding. (3) A heating pad set to 85–90°F for newborns. (4) Puppy milk replacer in case the mother cannot nurse. (5) A digital thermometer to monitor the mother's temperature from day 58. (6) Your vet's emergency number. (7) A scale to weigh puppies daily. Have everything ready by day 55.
Litter size varies significantly by breed and individual dog. Small breeds (Chihuahua, Pomeranian) typically have 1–4 puppies. Medium breeds (Beagle, Cocker Spaniel) average 4–6. Large breeds (Labrador, German Shepherd) can have 6–10+. The most accurate way to determine litter size is an X-ray at day 45–55, when fetal skeletons are visible and can be counted.
Schedule vet visits at: Week 4 (days 25–28) for ultrasound confirmation of pregnancy and fetal heartbeats. Week 7 (days 45–55) for X-ray to count puppies and assess their size relative to the birth canal. Day 58 onward — begin daily temperature monitoring. Contact your vet immediately if labor has not started by day 68, if there are more than 4 hours between puppies during delivery, or if the mother shows signs of distress.