Livestock Gestation Due Date Calculator
Fill in the values and the answer updates as you type.
How the Livestock Gestation Due Date Calculator works
Expected due date = breeding date + the average gestation length of the species. The averages used here are about 283 days for a cow, 340 days for a mare, 147 days for a ewe, 150 days for a doe goat, 114 days for a sow (3 months, 3 weeks, 3 days), and 31 days for a doe rabbit. Real dates vary by breed, the age of the dam, the sex and number of young, and the season, so a healthy birth can come days or weeks away from the estimate. Plan to watch the animals closely from a week before. A veterinarian can confirm pregnancy and advise on care. Example: with Breeding date 2026-10-01, and Species Cow, the result is Expected due date = Sunday, July 11, 2027; Average gestation (days) = 283; Average gestation (weeks) = 40.4.
Inputs and results
The Livestock Gestation Due Date Calculator takes 2 inputs and gives 5 results.
What you enter
- Breeding date — starts at 2026-10-01.
- Species — starts at Cow. Choose from: Cow, Mare, Ewe, Doe (goat), Sow and Doe rabbit.
What you get
- Expected due date
- Average gestation (days)
- Average gestation (weeks)
- Move to the birthing area by
- Days left from today
Livestock Gestation Due Date Calculator FAQ
How do I use the Livestock Gestation Due Date Calculator?
Enter breeding date and species in the fields, then read expected due date, average gestation (days), average gestation (weeks) and move to the birthing area by in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Livestock Gestation Due Date Calculator calculate?
Expected birth date for cows, mares, ewes, goats, sows, and rabbits. It returns expected due date, average gestation (days), average gestation (weeks) and move to the birthing area by from the 2 values you provide.
What values does the Livestock Gestation Due Date Calculator start with?
It opens with breeding date 2026-10-01 and species Cow so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Livestock Gestation Due Date Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Livestock Gestation Due Date Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.