Label and sort your photos by British or Irish grid location, using a GPX track file from a GPS.


  • Match pictures against a GPS track.
  • Generate British National Grid, Irish Grid or Irish Transverse Mercator references.
  • Save picture locations as:
    • Geotag in picture EXIF data.
    • Grid reference added to picture name.
    • Spreadsheet-compatible CSV file.
    • Google Earth KML file.
  • Sort pictures into grid square folders.
  • Accurate synchronisation between camera time and GPS time.
  • Supports up to 4 cameras.
  • Supports raw image files.
  • Precise conversion from GPS WGS84 position to grid reference using the definitive methods specified by OSGB, OSi and OSNI.
  • Configurable limit on position accuracy.
  • Runs on all versions of Windows from XP onwards, and on MacOS with PlayOnMac.


for Windows
(All versions from XP to Windows 10)
Program Source

PicLocata is free software, under the GPL open source licence.

How to Use PicLocata

  • Keep your GPS switched on while you are taking pictures.
  • Synchronise your camera clock by taking a picture of a GPS screen showing the time.
  • Upload your GPS track to a GPX file.
  • Run PicLocata to tag, label and sort your pictures.