OS coordinate tools and resources
ordnancesurvey.co.uk
Cost not checked
Ordnance Survey's coordinate transformation tools and resources (ETRS89, OSGB36, OSTN15/OSGM15).
- Best for
- Anyone converting GNSS coordinates to British National Grid.
- Cost
- Not checked.
- Category
- Coordinate conversion
- Source
- ordnancesurvey.co.uk · checked 15 Oct 2026
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