Use SASS on an existing project

Want to use SASS on an existing project that was build using standard CSS?

1. Paste your existing CSS into here: http://css2sass.heroku.com/

2. Convert to SCSS and save.

This SCSS can then be edited and compiled and the resulting CSS should seamlessly replace the old version.

Obviously the conversion wouldn't be as well written as if you'd built the SCSS from scratch, but who has time to rewrite thousands of lines of CSS?