Gestation Calculator
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Goat pregnancy week by week

A goat pregnancy lasts about 150 days from the breeding date, which is 21 weeks and 3 days; most births fall between day 145 and day 155. Day 0 is the breeding date, so week 1 is days 0 to 6, week 2 is days 7 to 13, and so on.
How far along is your goat? Pick the breeding date: the calculator shows which day she is on, the days to go and every date on her schedule.
Bred on
Length (days)
150
Average: 150 days. Adjust it for your breed.
Due date
Thu, Jul 29, 2027
Usually Jul 24 – Aug 3, 2027

Milestones

    💕
    Bred
    Day 0 · Mon, Mar 1, 2027
    ⏳
    Halfway
    Day 75 · Sat, May 15, 2027
    🧺
    About a week to go: get a clean, quiet birthing area ready
    Day 143 · Thu, Jul 22, 2027
    🎉
    Due date (kidding)
    Day 150 · Thu, Jul 29, 2027

Week by week: days and dates

Dates for a goat bred on Mar 1, 2027. Pick your own breeding date in the calculator above.
WeekDaysDatesOn the schedule
10–6Mar 1 – Mar 7Day 0: Bred
2–107–69Mar 8 – May 9Nothing to mark
1170–76May 10 – May 16Day 75: Halfway
12–2077–139May 17 – Jul 18Nothing to mark
21140–146Jul 19 – Jul 25Day 143: About a week to go: get a clean, quiet birthing area ready · Day 145: Earliest usual date
22147–153Jul 26 – Aug 1Day 150: Due date (kidding)
23154–155Aug 2 – Aug 3Day 155: Latest usual date

Week 1 (days 0–6): breeding

Day 0 is the breeding date. If she was bred on several days, the calculator counts from the first breeding and the usual window runs to the last breeding + 155 days.
Gestation is 145 to 155 days; breed, litter size and the doe’s age all move it (Merck Veterinary Manual). If your breed usually kids early or late, change the length.

Weeks 2 to 10 (days 7–69)

Nothing on the schedule until day 75 (halfway, week 11). By day 69, 81 days are left to the due date.

Week 11 (days 70–76): halfway

Day 75 (May 15, 2027) is halfway through a 150-day pregnancy. From here, 75 days are left to the due date.

Weeks 12 to 20 (days 77–139)

Nothing on the schedule until day 143 (a week to go, week 21). By day 139, 11 days are left to the due date.

Week 21 (days 140–146): a week to go and the usual window opens

Day 143 (Jul 22, 2027) is one week before the due date. The schedule’s reminder for this day: get a clean, quiet birthing area ready.
Day 145 (Jul 24, 2027) is the earliest usual date: from here on, a birth is inside the usual range.

Week 22 (days 147–153): the due date

Day 150 (Jul 29, 2027) is the due date, the average length counted from breeding. It is an estimate; most births fall between day 145 and day 155.

Week 23 (days 154–155): the usual window closes

Day 155 (Aug 3, 2027) is the latest usual date. If that day passes, or anything about the mother worries you, call your veterinarian.

Frequently asked questions

How far along is my goat?

Count the days since the breeding date (the first one, if she was bred more than once). Days 0 to 6 are week 1, days 7 to 13 are week 2, and so on: day 75 is in week 11 and the due date, day 150, is in week 22. The calculator above counts it for you.

How many weeks is a goat pregnant?

About 150 days, which is 21 weeks and 3 days. Most births fall between day 145 (week 21) and day 155 (week 23).

When should the birthing area be ready?

The schedule marks day 143 (week 21), one week before the due date: get a clean, quiet birthing area ready. For a goat bred on Mar 1, 2027, that is Jul 22, 2027.

Where the numbers come from

Sources: Merck Veterinary Manual: Pregnancy in Goats. Breeds and individual animals differ; change the length in the calculator if yours usually runs early or late. These dates are estimates, not veterinary advice: ask your veterinarian about your animal.
Estimates from published averages. Every animal is different: ask your veterinarian.