Giraffe Gestation Period: How Long Is a Giraffe Pregnant?

A giraffe is pregnant for about 430 days, roughly 14 months. Normal calving happens between 400 and 460 days, and a typical litter is 1 calf.

How long is a giraffe pregnant?

A giraffe carries her calf for an average of 430 days, or about 14 months. Counting from the breeding date, calving is normal anywhere from day 400 to day 460.

Key checkpoints across the 430-day giraffe gestation, measured in days from breeding:

Giraffe gestation timeline from day 0 to day 430: day 90 Ultrasound or hormone monitoring confirms the pregnancy in managed care; day 240 Calf growth accelerates; increase browse and mineral supply; day 400 Udder development begins and the abdomen visibly drops; day 440 Prepare the calving barn — a giraffe calf falls about two metres at birth; day 453 Expected calving.

Giraffe gestation stages, month by month

Months 1–5: early gestation

No external change is visible. In zoos the pregnancy is confirmed by ultrasound or faecal hormone analysis from around three months. Keep the herd stable and the diet consistent; browse quality matters more than quantity at this stage.

Months 6–10: mid gestation

Steady calf growth with modest extra demand on the cow. This is the practical window for hoof care, training for veterinary procedures and any change of enclosure or herd composition, all of which are best done long before she is heavily pregnant.

Months 11–14: late gestation

The calf gains most of its birth weight. The abdomen drops noticeably, the udder develops and she moves more slowly. Increase energy, protein, calcium and phosphorus, and keep her on soft footing rather than hard concrete.

Month 15: calving

She separates from the herd and becomes restless, and the calving is quick once it starts — front feet first, followed by the head, with the calf dropping to the ground. It should stand within about 30 minutes and nurse within an hour. Deep bedding under her is essential in managed care.

Signs a giraffe is pregnant

Ultrasound or faecal hormone monitoring confirms pregnancy from about three months
Gradual broadening of the abdomen, obvious only in the last five months
Udder development from roughly two months before calving
Movement becomes slower and she lies down more in the final weeks

Signs of approaching calving

She separates from the herd and becomes restless in the final day
Visible straining with the calf's front feet appearing first, delivered standing
Contact your vet if labour stalls, if the animal strains without progress, or if there is abnormal discharge before calving begins.

What affects giraffe gestation length

Giraffes carry for about 453 days — roughly 15 months — and give birth standing up, so the calf drops around two metres to the ground.
That fall is functional: the impact breaks the amniotic sac and shocks the calf into taking its first breath.
Newborns are about 1.8 metres tall and 50 to 70 kg, and they can stand within 30 minutes and run within a day.
Giraffes have no fixed breeding season and can conceive year round, but births cluster in the dry season in parts of their range.
Females often return to the same calving grounds they were born in, and calves are later left in loose 'crèche' groups watched over by one or two adults.
Around half of wild giraffe calves are lost to predation in the first six months, which is why calving in cover and rapid mobility matter so much.

Estimate your giraffe's calving date

Enter the breeding date for an estimated calving date at 430 days.

Estimate a giraffe due date

Breeding date

Estimated calving date

Tuesday, 16 November 2027

Earliest

17 Oct 2027

Latest

16 Dec 2027

Open the full Giraffe gestation calculator

Giraffe pregnancy FAQs

How long is a giraffe pregnant?

About 453 days, or roughly 15 months, with a normal range of around 430 to 465 days. Giraffes carry a single calf and twins are extremely rare.

Do giraffes really give birth standing up?

Yes. The cow stays standing and the calf falls about two metres to the ground. The impact ruptures the amniotic sac and helps trigger the calf's first breath, and healthy calves are unhurt by it.

How quickly can a newborn giraffe stand and run?

It is usually on its feet within 30 minutes and nursing within an hour, and it can run within a day. In a landscape full of lions and hyenas, a calf that cannot move quickly does not last long.

How big is a newborn giraffe?

About 1.8 metres tall and 50 to 70 kg — taller at birth than most adult humans. It grows extremely fast on the cow's rich milk, gaining as much as a couple of centimetres a day in the first months.

Do giraffes have a breeding season?

No fixed one — they can conceive at any time of year. In parts of their range births still cluster in the dry season, which is thought to reflect body condition and calf survival rather than a true seasonal cycle.

More gestation pages

Wild animal gestation chart