This plugin adds four expression functions to work with geohash in the field calculator
The expressions functions of plugin are all located in the field calculator window under the "Geohash" folder
Calculate the GeoHash from a geometry, the coordinates used to calculate the geohash are the coordinates of the centroid of the geometry.
Calculate the GeoHash from y, x (latitude, longitude) coordinates.
Return a geometry from a GeoHash string. The geometry will be a polygon representing the GeoHash bounds.
Return a point geometry from a GeoHash string. The point represents the center point of the GeoHash.
This plugin is based off Leonard Norrgård's geohash implementation in python so special thanks to him.