OS Grid Reference Display

Note that the box shows the OS grid square (red for a 10m square, green for a 100m square). The marker shows its south-west corner.
Use the normal Google maps controls to zoom in or out; you can also drag the map around and change to Satellite view.
If you lose the marker, press the button below.

OS grid ref:  


Credits This mapping tool is based on two libraries of Javascript code. Conversion between OS and other coordinate systems uses code written by Jonathan Stott. The original version of the code which interfaces with the Google maps API was written by Keith Balmer (as used on the Bedfordshire Natural History Society web site), and has been updated to use version 3 of the Google maps API by Peter Coxhead. All code is available under the GNU General Public License Version 2.
Page maintained by Peter Coxhead. Content last updated 17:41, 24 September 2023. Javascript version