NMEA to CSV

Universal Format Converter

Convert between CSV, TSV, JSON, and Excel. Supports multiple files, primary data, and batch operations.

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AboutNMEA to CSV

Convert raw NMEA 0183 GPS sentence logs (GGA, RMC) into CSV rows with decimal latitude, longitude, time and fix quality.Category: Scientific Formats

Turning raw GPS logs into readable spreadsheetsAuditing fix quality over a track

The NMEA to CSV tool is compatible with:GPS ReceiversMarine Navigation Logs.Turn a raw receiver log into readable CSV here, then convert the same trip's processed GPX_TO_CSV track alongside it to compare device-level fix quality against the app-recorded route.
NMEA 0183 is the low-level, comma-delimited sentence protocol that GPS receivers stream in real time — lines like $GPGGA and $GPRMC packed with degrees-minutes coordinates, fix quality codes and checksums that are meant for machines, not for reading. This tool parses GGA (fix data) and RMC (recommended minimum) sentences specifically, converts the degrees-and-minutes coordinate format into ordinary decimal latitude/longitude, and lays out time, fix quality and satellite count as clean columns. That's the difference between staring at a raw device log and having an actual table you can plot, sort by fix quality, or hand to someone auditing a marine or vehicle track. It also serializes rows back into checksummed GGA sentences, useful for feeding synthetic or edited position data back into NMEA-consuming software.

Frequently Asked Questions:

Which sentence types does it parse?

GGA (fix data) and RMC (recommended minimum) sentences specifically.

Why convert the coordinates?

Raw NMEA coordinates are in degrees-and-minutes format, the tool converts them to ordinary decimal latitude and longitude that's easier to plot or filter.

Built for marine navigators, vehicle telemetry reviewers and anyone auditing a GPS receiver's raw output sentence by sentence.