If there were several matings, use the first one for the earliest possible date.
Due date
Thu, Nov 5, 2026 63 days from mating
- Normal range
- Fri, Oct 30, 2026 to Sat, Nov 14, 2026
- Days elapsed
- 30
- Days remaining
- 33
- Weeks pregnant
- 4.3
| Day | Date | Milestone |
|---|---|---|
| 0 | Thu, Sep 3, 2026 | Mating Sperm can survive several days in the reproductive tract, so the true conception date may be later than this. |
| 18 | Mon, Sep 21, 2026 | Implantation Embryos attach to the uterine wall. Some female dogs go off their food around now. |
| 25 | Mon, Sep 28, 2026 | Ultrasound confirmation Pregnancy can be confirmed by ultrasound from about day 25, and heartbeats seen. It does not give a reliable litter count. |
| 30 | Sat, Oct 3, 2026 | Relaxin blood test A blood test for relaxin is reliable from around day 30. |
| 40 | Tue, Oct 13, 2026 | Increase food Energy needs climb from here. Move gradually onto a puppy or gestation diet, fed in smaller, more frequent meals. |
| 45 | Sun, Oct 18, 2026 | X-ray for litter count Fetal skeletons mineralize and become visible on X-ray from about day 45. This is the reliable way to count puppies and to know when whelping is finished. |
| 55 | Wed, Oct 28, 2026 | Prepare the whelping box Set it up now so she can settle in. Start taking her temperature twice daily. |
| 61 | Tue, Nov 3, 2026 | Watch for the temperature drop Rectal temperature falling below about 37.2 degrees Celsius (99 degrees Fahrenheit) usually means whelping within 24 hours. |
| 63 | Thu, Nov 5, 2026 | Due date Average is 63 days from mating. Anything from 57 to 72 days can be normal. |
Gestation is measured from ovulation, not from mating, and sperm survive for several days. That is why the range from a mating date is as wide as 57 to 72 days. Progesterone testing at the time of mating narrows it to within a day or two.