Dog Pregnancy Calculator
Calculation Method:
Based on Ovulation Date
Based on Mating Date
Date of Ovulation:
Most accurate. Often 1-2 days after initial mating or identified by progesterone testing / cytology (First Day of Cytological Diestrus).
Date of (Last) Mating:
Less accurate as sperm can live for days. Use last mating date if known.
Calculate Due Date