The life phases of a dragon in 5th edition D&D are:
- Egg
- Wyrmling
- Young
- Adult
- Ancient
Given that a dragon lives for at the least 15-ish centuries, up to I think well over two thousand years, how long does each phase of their life last?
Dragon Age Categories
- Wyrmling (5 years or less)
- Young (6-100 years)
- Adult (101-800 years)
- Ancient (801 years or more)
From 5e MM p.86
While Samuel Kelley's answer covers for 5e matertial, 3.5e breaks it down further:
Dragon | min-max | Human | Comment |
---|---|---|---|
Wyrmling | 0-5 | 0 - 2 | |
Very Young | 6-15 | 2 - 6 | |
Young | 16-25 | 6 - 10 | |
Juvenile | 26-50 | 10 - 15 | |
Young Adult | 50-100 | 15 - 20 | Age that eggs may be produced |
Adult | 101-200 | 20 - 30 | |
Mature Adult | 201-400 | 30 - 40 | |
Old | 401-600 | 40 - 55 | |
Very Old | 601-800 | 55 - 70 | |
Ancient | 801-1000 | 70 - 80 | Female egg laying usually ends |
Wyrm | 1001-1200 | 80 - 90 | |
Great Wyrm | 1201-4400 | 90+ |