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

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

How to convert .nmea to .gpx

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

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.

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.

Download RouteConverter — Windows, macOS, Linux, free.

Related conversions

• GPX to NMEA 0183
• CSV to GPX
• Garmin FIT to GPX

FAQ

Can RouteConverter convert .nmea to .gpx for free?

Yes. RouteConverter is free and open source. Opening a NMEA 0183 file and saving it as GPX 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 .gpx back to .nmea?

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