Gecko Egg Incubation Calculator

It depends heavily on species and, for some species, temperature. Leopard gecko eggs hatch in 35–89 days (temperature-dependent). Crested gecko eggs take 60–120 days. Tokay gecko eggs take 60–80 days, Day gecko eggs take 45–90 days, and Fat Tail gecko eggs (both African and standard) take 55–75 days.

Select your species from the calculator above and enter the lay date, or use our dedicated calculators for leopard geckos and crested geckos for temperature-specific estimates.

Leopard geckos incubated warm (around 90°F) can hatch in as few as 35 days — the fastest incubation among commonly kept gecko species.

Crested geckos incubated at cool room temperature can take up to 120 days — the slowest incubation among commonly kept gecko species, though this also means no dedicated incubator is required.

No. Leopard geckos are a well-documented TSD species where incubation temperature determines hatchling sex. Crested geckos and several other commonly kept species do not show strong TSD, so temperature mainly affects incubation speed rather than sex ratio.

Most commonly kept gecko species do well around 80% humidity during incubation, though exact needs vary by species — check the species-specific calculators linked above for details.

Housing and diet vary meaningfully by species — insectivorous geckos like leopard and tokay geckos need appropriately sized feeder insects dusted with calcium, while crested geckos can be raised largely on a commercial crested gecko diet powder.

At 35–120 days depending on species, geckos generally incubate faster than bearded dragons (65 days) at the low end but can run comparably long to green iguanas (105 days) at the high end.