Biology Calculators
Dog Pregnancy Calculator
Estimate your dog's due date from mating date, including days remaining and weekday of delivery.
Use this dog pregnancy calculator to estimate when your dog is likely to give birth.
The due date is calculated with the formula: due date = mating date + 63 days.
For a practical delivery window, this calculator also considers 58 days (earliest likely) and 68 days (latest likely) after mating.
How to calculate a dog's due date: take the mating date, add 63 days for the estimate, and check 58-68 days for the likely range.