Data isn't always in the format you need. Perhaps a date is in International format, but your app needs it in American format. Or maybe you need to Title Case a subject, truncate text for a Tweet, or turn Markdown text into HTML for your blog. Zapier's Formatter tool can help.
You can find more information here.
Various utilities like "choose value from list" or "lookup in table".
Work with text data to find & replace, capitalize, remove HTML, and more.
Shorten a given URL using zpr.io.
Work with numeric data to do math operations, reformat currencies, and more.
Work with dates and times to change formatting or add/subtract time.