Dog Pregnancy Calculator
Estimate your dog's whelping date from the mating date.
Pets FitnessScience-backed formula
Enter your details
Fill in the fields, then calculate
Please choose a date.
Awaiting Data
Enter your details and tap Calculate to see your results appear here.
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ResultYour result appears here.
What it measures
Dog pregnancy lasts about 63 days. From the mating date, this tool estimates the due date and the current stage.
Your pet's stats convert into friendly, human readable numbers.
Birth can arrive a few days either side, so watch for nesting signs near term.
How to use this calculator
- Enter the mating or breeding date.
- Tap Calculate for the estimated due date.
The formula used
Due date = mating date + 63 days (range 58 to 68)
- mating date
- When breeding took place.
- gestation
- About 63 days.
Understanding Your Results
Early term
Day 58
Birth possible from here.
Average
Day 63
The typical due date.
Late term
Day 68
Watch closely by now.
Tips to Improve
- Provide a quiet nesting area near term.
- Keep fresh water and good nutrition.
- Watch for a temperature drop before labor.
- Call a vet with any concerns.
Frequently Asked Questions
About 63 days, give or take a few.
It is an estimate; natural birth varies by a few days.
If labor is overdue or the animal seems distressed.
Scientific References
- American Kennel Club. (2023). Dog pregnancy week by week.
- Concannon, P. W. (2011). Reproductive cycles of the domestic bitch. Animal Reproduction Science, 124(3-4), 200–210.