How to Use the Dog Pregnancy Calculator
Calculate canine whelping timeline and veterinary milestones:
Enter Mating Date
Select date of first breeding session or ovulation.
Calculate 63 Days
Engine adds 63 days average canine gestation.
Schedule Vet Check
Schedule ultrasound around Day 25 and X-Ray around Day 50.
Prepare Whelping Box
Monitor rectal temperature drop (98°F / 36.6°C) preceding whelping.
Key Features & Canine Reproduction
63-Day Standard Gestation
Calculates standard 63-day gestational period from ovulation.
Ultrasound & X-Ray Milestones
Projects exact dates for fetal heartbeat detection and bone calcification count.
100% Private Client Compute
Runs in browser memory with zero tracking or server logs.
Canine Reproduction Guide: Dog Gestation & Whelping Care
Canine pregnancy lasts approximately 63 days (9 weeks). Around Day 25 to 30, abdominal palpation or diagnostic ultrasound can confirm pregnancy. By Day 45-50, puppy skeletons calcify, allowing radiographic (X-ray) counting of litter size.
Frequently Asked Questions
?How long is a dog pregnant?
Canine gestation is typically 63 days (ranging from 58 to 68 days).