Geo for Google Docs

A MapBox Project

Geo for Google Docs is a set of tools that make it easy to use data from Google Docs Spreadsheets in TileMill, an open source map design studio.

Export spreadsheet data to GeoJSON Any spreadsheet with geocodes (longitude and latitude coordinates) can be exported to a TileMill-ready file. After exporting, just copy the GeoJSON file to your TileMill/files/data directory.
Geocode arbitrary addresses If your spreadsheet does not have geocodes, you can add them using a geocoding service like those provided by Yahoo PlaceFinder or MapQuest Nominatim. Consult these services for their terms of use.

Copy the source of mapbox.js
Open your spreadsheet and goto tools > script editor
Replace the content in the text box with the copied source from mapbox.js
Set the name of this script to geo
Go to file > save and close the popup window
Refresh your spreadsheet and you will see a new menu called Geo added after Help on the menu bar