Animal Gestation Calculator

Llama Gestation Calculator

Last updated

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.

Calculate a cria due date

What do you know?

Estimated birthing date

Wednesday, 13 October 2027

Earliest

23 Sept 2027

Latest

28 Oct 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 pregnancy11 Nov 2026
45Ultrasound or blood test confirms the pregnancy12 Dec 2026
90Recheck for early embryo loss26 Jan 2027
250Clostridial booster ahead of birthing5 Jul 2027
305Increase the ration; shear if she is due in hot weather29 Aug 2027
330Earliest normal birthing — begin daily morning checks23 Sept 2027
350Expected birthing13 Oct 2027

What to do next

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.

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
28 Oct 202613 Oct 2027
4 Nov 202620 Oct 2027
11 Nov 202627 Oct 2027
18 Nov 20263 Nov 2027
25 Nov 202610 Nov 2027
2 Dec 202617 Nov 2027
9 Dec 202624 Nov 2027
16 Dec 20261 Dec 2027
23 Dec 20268 Dec 2027
30 Dec 202615 Dec 2027
6 Jan 202722 Dec 2027
13 Jan 202729 Dec 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 do I calculate a llama due date?

Enter the breeding or mating date and the calculator adds the average llama gestation of 350 days. It also shows the earliest (330 days) and latest (365 days) dates that are still normal.

Should I use the first or last mating date?

If mating happened over several days, run the calculator for the first and the last date. The cria is most likely to arrive between the earliest result of the first date and the latest result of the last date.

Can I work out when to breed for a target llama due date?

Yes. Switch to target due date mode and enter the date you want; the calculator subtracts 350 days to give the breeding date, plus the earliest and latest breeding dates that still fit.

How accurate is the llama due date calculator?

It gives a planning estimate from published averages. Most births fall inside the 330–365 day window shown, but ask a vet to confirm the pregnancy and check anything outside that range.

More gestation pages

Livestock gestation chart