How much does it cost? Will Henderson Updated March 09, 2018 15:41 Follow Our core 3 word system will always be free for individuals to use, and there will always be ways to use our API for free. You can read more in our pricing policy. Related articles What is your API for? How does what3words create revenue? How do I partner with what3words? Can I download a database of the words? How does what3words handle buildings of more than one floor, such as apartment blocks? Comments 0 comments Article is closed for comments.