Free tool
Egg Timer Calculator
Enter the breeding timer shown right after you start an attempt to narrow down which dragon is in the egg.
Egg identification
What is in this egg?
Enter the breeding timer exactly as it shows right after you start the attempt. A timer that has already been counting down will not match.
See the full timer chart
| Base time | Upgraded cave | Dragon(s) | How reliable |
|---|---|---|---|
| 30m | 24m | Lightning Dragon, Poison Dragon | Moderate — two dragons share this timer |
| 6h | 4h 48m | Mud Dragon, Drifter Dragon | Moderate — two dragons share this timer |
| 8h | 6h 24m | Metal Dragon, Blazing, Fog, Ice, Iceberg, Sonic, Willow, Snow, Rain, Obsidian | Very low — ten dragons share this timer |
| 9h 30m | 7h 36m | Salamander Dragon | High |
| 12h | 9h 36m | Blue Fire Dragon, Ghostly Spectre Dragon | Moderate |
| 12h 30m | 10h | Glass Dragon | High |
| 20h | 16h | Zombie Dragon | High during its events |
| 20h 12m | 16h 10m | Apocalypse Dragon | Unique timer |
| 23h | 18h 24m | Crackle Dragon | High |
| 24h | 19h 12m | Crystal Dragon, Eldritch Dragon, Equinox Dragon, Lunis Dragon | Low — four dragons share this timer |
| 25h | 20h | Krampus Dragon | High |
| 26h 24m | 21h 7m | Ouroboros Dragon | Unique timer |
| 30h | 24h | Diamond Dragon, Sapphire Dragon, Pearl Dragon, Topaz Dragon, Jet Dragon, Aurum Dragon | High in season |
| 30h 26m | 24h 21m | Jade Dragon, Amber Dragon | High — Jade (summer) and Amber (autumn) never overlap |
| 31h | 24h 48m | Ruby Dragon, Aquamarine Dragon, Emerald Dragon, Peridot Dragon | High in season |
| 32h | 25h 36m | Lapis Dragon | High in season |
| 36h 28m | 29h 10m | Nightmare Dragon | Unique timer |
| 47h | 37h 36m | Silver Dragon | High |
| 48h | 38h 24m | Rainbow Dragon, Moon Dragon, Sun Dragon | Moderate |
| 60h | 48h | Triple Rainbow Dragon | Unique timer |
Results come from the guides published on this site (checked against them on October 24, 2026), not from the game itself. Breeding is random and the game can change. How we source data