You can try Project Gutenberg. It offers a wide range of free e - books, including 'The Hobbit'. It's a great resource for classic literature.
Some public library websites may also provide free access to 'The Hobbit' in e - book form. You just need to register with your local library and use their online services. For example, OverDrive is often used by libraries to lend e - books, and there's a chance 'The Hobbit' is available there.