This chrome extension enables the use of Checkvist.com to create project estimates.

Use tags to record how many minutes, hours or days a particular item in a checkvist outline will take (e.g. #45m. #8h or #2d). This extension will tag parent items with the totals of its children.

The extension options allow you to define your minutes, hours and/or days tag format and choose to use them as a prefix or suffix as well as define how many working hours should equal 1 day. You may also choose for the extension to generate any combination of minutes tags, hours tags or days tags.

To try it out, download the extension from the Chrome Web Store or clone the source and install in Chrome's Developer Mode.