Google Docs uses Google Translate to help you translate entire documents into one of 64 languages.
Here's how to translate a document:
- Go to the Tools menu, and select Translate document....
- Type in the name of the new document, select the language into which you'd like to translate the document, and press OK.
- A translated copy of your document will be created. You can access this copy in your Drive at drive.google.com.