What is a .NMEA file?
NMEA files hold GPS sentences - position, time and speed - as plain text.
- Did you know
- NMEA 0183 is the text protocol nearly every GPS receiver uses to report its position.
- The NMEA 0183 standard comes from the National Marine Electronics Association and was built for a 4800-baud serial link between boat instruments.
- Each sentence opens with a “$”, a talker and message code, then ends with an optional “*” checksum that is the XOR of every character in between.
- What Analyser reads
- Inspect geospatial and GIS files without a map: TopoJSON, OpenStreetMap XML, Esri Shapefile siblings (SHP/SHX/DBF/PRJ/CPG), world files, GML, NMEA GPS logs, IGC flight logs, MapInfo TAB/MIF, GDAL VRT, PMTiles, DTED terrain, Esri ASCII grids and SRTM .hgt - surfacing CRS/EPSG, feature/record counts, bounding boxes and elevation ranges. GRIB/NetCDF/GeoPackage/MBTiles/MrSID/ECW identified.
- Depth of analysis
- .NMEA is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .NMEA file
- Drag a .NMEA file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.