Bilbo Baggins is 111 years old at his eleventy-first birthday party in J.R.R. Tolkien’s The Lord of the Rings.
Bilbo’s birthday is central to the opening of The Fellowship of the Ring. Hobbits traditionally celebrate birthdays, and Bilbo’s unusually long life provides the occasion for a large party at Hobbiton. The word “eleventy-first” is Tolkien’s playful way of saying 111th, combining a familiar number with Hobbit-style language.
Bilbo was born in the year 2890 of the Third Age, according to Tolkien’s chronology. His party takes place in 3001, making him 111. He uses the event to give the impression that he is leaving permanently, then disappears with the help of the One Ring.
A common mix-up is confusing Bilbo’s age with Frodo’s. Frodo is 33 when he comes of age and 50 when he leaves Hobbiton with the Ring.