Animal Gestation Calculator

Llama Gestation Calculator

A llama's gestation period is about 350 days, or roughly 11 months and 2 weeks, though it ranges from 330 to 365 days depending on breed and individual animal.

How to use the llama gestation calculator

  1. 1. Choose what you know. Enter the breeding date to get a due date, or switch to the target due date mode to work backwards to the breeding date you need.
  2. 2. Refine the inputs. The calculator uses the 350-day average for this species.
  3. 3. Plan around the range. Use the earliest and latest dates and the milestone timeline to schedule checks, feed changes and preparation of the birthing area.

Calculate a cria due date

What do you know?

Estimated birthing date

Saturday, 28 August 2027

Earliest

8 Aug 2027

Latest

12 Sept 2027

350 days remaining0% complete

0 of 350 days elapsed

Milestone timeline

Key Llama pregnancy milestones with calculated calendar dates
DayMilestoneDate
14Spit-off test to screen for pregnancy26 Sept 2026
45Ultrasound or blood test confirms the pregnancy27 Oct 2026
90Recheck for early embryo loss11 Dec 2026
250Clostridial booster ahead of birthing20 May 2027
305Increase the ration; shear if she is due in hot weather14 Jul 2027
330Earliest normal birthing — begin daily morning checks8 Aug 2027
350Expected birthing28 Aug 2027

What to do next

How long is a llama's gestation period?

The average is 350 days from breeding to birthing, about 11 months and 2 weeks. Anything between 330 and 365 days is normal, and a typical litter is 1 cria. Treat the calculated date as the middle of that window rather than a fixed appointment.

Llama gestation table: breeding date to birthing date

Breeding dates one week apart with the matching birthing date at 350 days.

Twelve sample Llama breeding dates and their calculated due dates
Breeding dateExpected birthing date
12 Sept 202628 Aug 2027
19 Sept 20264 Sept 2027
26 Sept 202611 Sept 2027
3 Oct 202618 Sept 2027
10 Oct 202625 Sept 2027
17 Oct 20262 Oct 2027
24 Oct 20269 Oct 2027
31 Oct 202616 Oct 2027
7 Nov 202623 Oct 2027
14 Nov 202630 Oct 2027
21 Nov 20266 Nov 2027
28 Nov 202613 Nov 2027

Working backwards from a target birthing date

If you want crias on the ground in a particular week, switch the calculator to target date mode and enter the date you are aiming for. It subtracts 350 days to give the breeding date to book, plus the earliest and latest service dates that still land inside your window.

Llama gestation calculator FAQs

How long is a llama pregnant?

About 350 days — roughly 11 and a half months — with a normal range of 330 to 365 days. Llamas carry marginally longer than alpacas, so do not use an alpaca due date for a llama.

How is a llama pregnancy confirmed?

A spit-off test at about 14 days gives a first indication, and ultrasound or a progesterone blood test from around day 45 confirms it. A recheck near day 90 is worth doing because early embryonic loss is common in camelids.

How much extra feed does a pregnant llama need?

Very little until the last third. Good forage and a camelid-specific mineral supplement covers most of the pregnancy; over-conditioning her causes birthing problems. Increase energy and protein modestly in the final two to three months.

What does a normal llama birth look like?

Fast and in daylight. Once straining starts, the nose and both front feet appear and the cria is usually delivered within 30 minutes. She gives birth standing, so the cria drops a short distance — that is normal and helps clear the airway.

What should I do in the first hours after the cria is born?

Dip the navel in iodine, check the cria is up and nursing within two to three hours, and make sure it gets colostrum within the first six hours. Weigh it if you can: a cria that loses weight over the first two days is not getting enough milk.

More gestation pages

Livestock gestation chart