King Snake Egg Incubation Calculator

King snake eggs take 55 days on average to hatch, with a normal range of 45–65 days depending on species and incubation temperature (78–82°F).

Select your species from the calculator above and enter the lay date. Scarlet king snakes hatch fastest (around 45 days), while Mexican Black king snakes typically take a bit longer (around 60 days).

King snake eggs incubate best at 78–82°F (25–28°C) with 75–85% humidity, similar to corn snakes and other temperate colubrids.

A king snake clutch typically contains 5 to 20 eggs, laid roughly 4–6 weeks after successful breeding.

In the final days, eggs develop a visible dimple or slight collapse as the hatchling absorbs remaining yolk. Once pipped with the egg tooth, hatchlings may take 24–48 hours to fully emerge — never assist this process.

Hatchlings typically have their first shed within 7–10 days of hatching, and most won't accept a first meal (appropriately sized pinky mice) until after that first shed is complete.

Yes. Scarlet king snakes hatch fastest at around 45 days, California and Speckled king snakes average around 55 days, and Mexican Black king snakes run slightly longer at around 60 days.

At 55 days average, king snakes hatch faster than ball pythons (57 days) and corn snakes (60 days), and far faster than boa constrictors (110-day live-bearing gestation).