Disclaimer: I don't own The Hobbit. I don't earn money with this.

General information regarding the story:

In this story the average lifespan of a dwarf is around 380 years.

From the site " Comparative Ages of Dwarves and Men by Lisa Williams"

I took the following formula and modified the second one.

(D = dwarf age, H = human age)

up to and including 40(dwarf years)

D = H*2

starting from 40

D = 6.8*H - 96

The story takes place in the year 2770 and Moria is still a kingdom.

Thorin : born 2730 TA

(40/20 years old)

Gwyn(OC) : born 2733 TA

(37/18 years old)

Baldur(OC) : born 2717 TA

(53/22 years old)

Smaug's attack : originally 2770 TA

in this story later