I knocked out a tiny website that I’ve craved while working on geospatial projects. It’s an interactive tool that transforms between geohash and latitude/longitude pairs. It supports direct geohash links and direct lat/lng links. It displays the bounding box of the geohash, unlike geohash.org, which only marks the hash center (and seems to have fallen victim to Google’s gross watermarking of their free Maps tiles.)
The entire project is maybe 50 lines of code including markup, but UI actually feels pretty slick thanks to the awesomeness of Mapbox. Oh yeah, and it has an emoji favicon (relentless march of technology, etc).
Give it a whirl, and enjoy.