Input your dog's mating date and breed size to calculate their precise due date and whelping timeline.
A dog’s standard gestation period is approximately 63 days (about 9 weeks) from the date of ovulation or mating. Our dog pregnancy calculator and dog due date calculator use the mating date you enter to instantly project an expected whelping window, accounting for small breed, medium breed, and large breed timing differences so you can plan veterinary checks and whelping preparation.
Once your dog's due date is estimated by our calculator, the 63-day gestation can be thought of as three broad phases. Each phase has clear milestones to watch for as your dog progresses toward the expected whelping date.
It provides a reliable estimate based on the 63-day average, but normal whelping can safely occur between 58 to 68 days. The calculator gives you a practical window for planning rather than an exact minute-by-minute guarantee.
Common pre-labor signs include a drop in body temperature below 99°F, increased restlessness or nesting behavior, and a noticeable loss of appetite. When you observe these signs, expect labor to begin within 12–24 hours and contact your veterinarian if you have concerns.
Predict when your female dog will next go into heat and estimate her peak fertile mating window.
Convert your dog's age into human years accurately using the latest AVMA genetic formulas.
Estimate the average lifespan remaining for your dog considering their breed size and lifestyle.
Check if your dog's current weight is healthy, underweight, or obese compared to their adult breed average.
Estimate monthly pet insurance premiums to see if you can afford coverage for your dog.