Goat Gestation Calculator
This goat gestation period calculator finds your doe's expected kidding date instantly. Enter the breeding date and get the goat gestation period for your specific breed, pregnancy milestones, and gestation range.
Goat Gestation Calculator
Free tool — no signup required
How to Use This Calculator
Enter the date your doe was bred or exposed to the buck using the date picker. If you know the breed, select it from the dropdown for a more precise estimate. Click Calculate Due Date to see the expected kidding date, earliest and latest dates, and a full milestone timeline.
The calculator saves your last result in the browser so it persists between visits — useful during busy kidding seasons when you need quick reference.
Goat Gestation Period — What to Expect
The gestation period of goat is 150 days on average (approximately 5 months), with a normal range of 145–155 days. The gestation period for goats progresses through three distinct stages. The Nigerian Dwarf goat gestation period averages 145 days, while the Boer goat gestation period is typically 150 days like most standard breeds.
During the first two months, the embryos implant and fetal organs begin developing. This is the most critical window for embryo survival — stress, nutritional deficiencies, and disease exposure can cause early pregnancy loss. Pregnancy can be confirmed by ultrasound as early as day 25–30 or by blood test at day 30+.
The middle months (days 60–120) are typically uneventful. The doe's nutritional needs increase as the fetuses grow. This is a good time to deworm if needed, administer booster vaccinations (CDT), and confirm whether the doe is carrying singles, twins, or more via ultrasound.
The final month (days 120–150) is when 70% of fetal growth occurs. Increase the doe's grain ration gradually to support fetal development and colostrum production. Watch for pregnancy toxemia (ketosis) in does carrying multiple kids. Begin checking ligaments and udder daily from day 140 onward. A selenium/vitamin E injection 4 weeks before the due date is recommended in selenium-deficient areas.
Breed-Specific Goat Gestation Periods
The breed comparison below shows goat gestation period by breed. The Nigerian Dwarf goat gestation period (145 days) and Boer goat gestation period (150 days) represent the two most searched breed-specific ranges.
| Breed | Avg. Gestation (Days) | Type |
|---|---|---|
| Boer | 150 days | Meat breed |
| Nubian | 150 days | Dairy breed |
| Alpine | 149 days | Dairy breed |
| LaMancha | 150 days | Dairy breed |
| Saanen | 150 days | Dairy breed |
| Toggenburg | 149 days | Dairy breed |
| Oberhasli | 150 days | Dairy breed |
| Kiko | 150 days | Dairy breed |
| Pygmy | 145 days | Dairy breed |
| Nigerian Dwarf | 145 days | Miniature dairy breed |
| Angora | 150 days | Dairy breed |
How We Calculate Goat Gestation
The goat gestation calculator uses the formula: Due Date = Breeding Date + Average Gestation Days. The 150-day average is based on data from the American Dairy Goat Association, Penn State Extension, and University of Minnesota Extension goat production guides.
Frequently Asked Questions
Sources & References
- USDA — Goat and kid production statistics
- Penn State Extension — Goat reproduction and kidding management
- University of Minnesota Extension — Goat gestation and health
- Merck Veterinary Manual — Caprine reproduction
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All Gestation Periods
Complete comparison chart
GestationCalc Editorial Team
Our editorial team includes animal husbandry specialists, veterinary consultants, and agricultural extension educators. Content is reviewed against peer-reviewed research and guidance from USDA, Penn State Extension, and the Merck Veterinary Manual.
Last reviewed: January 5, 2025