GPRMC decoder

This is the best GPRMC decoder online! And possibly the only one – at least I couldn’t find any when I needed it, so I wrote my own. There are many pages detailing the structure and contents of the NMEA sentences, so I will not go into that here. Instead, this page helps you decode those funny looking text strings your GPS spits out, e.g.

    $GPRMC,001225,A,2832.1834,N,08101.0536,W,12,25,251211,1.2,E,A*03

This page is new and there are bugs. In particular there seems to be weird checksum problems with some NMEA sentences. Obviously the manufacturers (Garmin, TomTom, Magellan etc) have their own ways of interpreting the NMEA standard. The same goes for the encoding of the date. The standard clearly says it should be encoded DMY, but at least one GPS maker uses YMD. Such rogue NMEA strings cannot be reliably decoded here.

If you have strings that you know are standards compliant but fail to decode here, please send me a handful of them so I can investigate. Also include what kind of GPS they come from.

Enough talking – insert your GPRMC sentence below and press the Decode button!