Ordnance Survey Grid Reference to latitude and longitude

This form converts Ordnance Survey six-figure grid references to latitude and longitude.

Enter grid coordinates in the standard 100-metre format, eastings first, then northings.
Both eastings and northings must be three-digit numbers.
Remember to select the correct 100-km grid square from the list.

Grid square: Easting: Northing:

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Last modified on 1 October 1998