Apps
Free tools for surveyors, built and tested by surveyors. No accounts, no ads, and your data stays on your device.
MapGrid
Coordinate conversion, wherever you work.
A free, browser-based coordinate converter for the UK and Romania.
UK: OSGB36 / BNG and Irish Grid via OSTN15 and OSTN02, heights above Newlyn
Romania: Stereo 70 with official ANCPI grids, heights above Marea Neagră 1975
Point lists with import and export: CSV, Excel, KML/KMZ, fixed-width
Shareable links and accuracy reporting
No account needed, your data stays on your device
UK Grid Reference Finder
Accurate OS grid references in your pocket, even offline.
OS grid references and survey-grade coordinates on your Android phone, online or offline.
OS grid references, OSGB36, WGS84, MGRS, Plus Codes, Irish Grid and postcodes
Full OSTN15 built in (0.15 m at 95%), works offline
Compass with magnetic, true and grid north, plus a spirit level
14 languages
Free, no ads, no accounts, no tracking
LineRef
Locations by line reference and mileage, on and offline.
Find and share locations by line reference and mileage.
Find a location by line reference and mileage, milepost or coordinates
Map view with offline maps
Pins, notes and sharing
Light and dark themes
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