In J.R.R. Tolkien's "The Hobbit," Bilbo Baggins is described as being roughly three feet, or 0.91 meters tall. However, it's important to note that Bilbo's height is relative to the other characters in Middle-earth, who are typically taller than humans in our world. In the context of hobbits, Bilbo is actually of average height, as most hobbits are around three to four feet tall.
It's also worth noting that Bilbo's height changes over the course of his journey in "The Hobbit." In the beginning, he is content to live a quiet, comfortable life in his hobbit hole, and his height reflects this unambitious nature. But as he becomes more adventurous and takes on greater challenges, his stature grows as well, both literally and figuratively. By the end of the book, Bilbo has become a hero and a leader, and his increased height serves as a symbol of his newfound confidence and strength.
In addition to "The Hobbit," Bilbo also appears in "The Lord of the Rings" trilogy, and his height is mentioned again in those books. In "The Fellowship of the Ring," Bilbo is described as having grown "to be rather fat and rather red in the face," but his height is not specifically mentioned.
Overall, Bilbo Baggins may be small in stature compared to humans in our world, but in the world of Middle-earth, he is a typical hobbit and his height reflects his character development throughout the story.