ARK Breeding Calculator

It depends on the creature and your server rates. On official (1x) a Rex takes about 5 hours to hatch and roughly 3 to 4 days to fully mature, while a Giganotosaurus takes days to hatch and around 10 days to raise. Pick your creature and rates above for the exact incubation, baby, and maturation times.

A newborn baby has no access to a feeding trough, so you have to hand-feed it directly until it reaches Juvenile at 10 percent maturation. This baby stage is the most demanding part of breeding, since the food drains fast and a missed window can starve the baby. After 10 percent it can eat from a trough and needs far less attention.

Egg-laying creatures (most dinos) drop a fertilized egg that you incubate at the right temperature until it hatches. Mammals like the Doedicurus, Mammoth, and Sabertooth use gestation instead: the female carries the baby and gives live birth, so there is no egg to incubate. Both are affected by your server's hatch or gestation speed.

Hatch / Gestation Speed matches your server's EggHatchSpeedMultiplier and Baby Mature Speed matches BabyMatureSpeedMultiplier. Official servers run both at 1. Raising them shortens the incubation and maturation times proportionally, so a creature that takes days on official can be bred in hours on a boosted server.

Not yet. This calculator focuses on incubation and maturation times, which are the numbers you plan a breeding session around. Imprinting cuddle timing and mating cooldown are a separate feature we would rather ship accurately than estimate. For now, use the maturation time as your baseline and imprint on the standard interval while the baby grows.