Convert GPX (.gpx) to NMEA 0183 (.nmea)

RouteConverter opens GPX files and saves them as NMEA 0183 — free, offline, no upload required.

How to convert .gpx to .nmea

1. Open the .gpx file via File → Open.
2. Pick NMEA 0183 in the Save as dropdown.
3. Choose where to save it via File → Save as.

What carries over from GPX to NMEA 0183

• NMEA 0183 holds one list per file: RouteConverter saves the route, track or waypoint list currently selected.
• NMEA 0183 does not tell waypoints, routes and tracks apart: it stores a plain list of positions.
• Kept: time stamps, elevation, speed, heading and point names.
• Lost: heart rate — NMEA 0183 has no field for this data.

About GPX (.gpx)

GPX (GPS Exchange Format) is an open XML format for waypoints, tracks and routes, with optional time, elevation and extension fields. It's the universal GPS interchange format — read and written by Garmin Connect, Google Earth, OsmAnd, Strava, komoot and nearly every GPS app or device made since 2004.

About NMEA 0183 (.nmea)

NMEA 0183 is the raw ASCII sentence stream a GPS receiver emits over serial — the lowest-common-denominator log format, with no route or metadata structure. Produced by marine GPS units and basic GPS loggers; read by almost anything that talks to a GPS receiver directly.

Download RouteConverter — Windows, macOS, Linux, free.

Related conversions

• NMEA 0183 to GPX
• CoPilot to GPX
• CSV to GPX

FAQ

Can RouteConverter convert .gpx to .nmea for free?

Yes. RouteConverter is free and open source. Opening a GPX file and saving it as NMEA 0183 does not require an account, a subscription, or an internet connection.

Does the file get uploaded anywhere?

No. RouteConverter runs on your own computer (Windows, macOS or Linux) and converts the file locally — nothing is sent to a server.

Can I convert .nmea back to .gpx?

Usually yes — open the NMEA 0183 file and pick GPX in the Save-as dropdown. Fields the target format cannot represent are dropped with a warning.