QTH Calculator

This page allows you to convert between Maidenhead Gridsquare, Degrees-Minutes-Seconds (DMS) coordinates, and Decimal Degrees (DD) coordinates.

Gridsquare may be either 4, 6, 8, or 10 characters and will convert to DMS and DD coordinates.
DMS coordinates may be up to 6 decimal places for Seconds, and will convert to a 10-character Gridsquare and DD coordinates.
DD coordinates may be up to 6 decimal places, and will convert to a 10-character Gridsquare and DMS coordinates.

Results will appear in the RESULTS box below and the location will be displayed on the map.

You can also use the map to zoom in to your location and find your 10-character Gridsquare.