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≡Dove’s Guide for Church Bell Ringers
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Grid Reference Converter

This script will convert an OSGB National Grid Reference to Latitude and Longitude using WGS84 datum.

UK National Grid Reference Converter

Please enter the Grid Reference in 2-letter 6-digit (eg ST156781), 2-letter 8-digit (eg ST15557812) or 10-digit (eg 3155517812) format:

Grid Ref: Calculate Lat & Lng to decimal places

Lat, Lng: 51.495690, -3.217900

Note: This script will give incorrect results for NG Refs in Ireland, N. Ireland and the Channel Islands

Copyright © 2003–2025 Central Council of Church Bell Ringers
Content: Dove Team – Programming: Richard Smith & Sid Baldwin.
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