Map Coordinate Converter

OSGB to Latitude & Longitude Converter

Latitude: OS Ref.
Enter 4° West as -4.0Enter as e.g.TQ041312

PHP version by Anthony Houghton
Based in part on Quick Basic code written by Phil Brady
but using the algorithms from Ordnance Survey - ' A Guide to coordinate systems in Great Britain' Appendix C.

These calculations are for illustration only and
no liability can be accepted for any losses however caused.

Strolling Guides

Last updated  Tuesday, 5 April, 2016
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