Enter a nwctxt tune in the text area or use the browse button to upload a file then press "Convert to MusicXML",
you'll be prompted to download a musicXML file if the conversion is successful.
To get a nwctxt file, you need Noteworthy Composer. Go to File->Export and choose NWCTXT

Please report any issue. The converter code is open source

Edit your MusicXML with MuseScore, the free score editor

Contact me :

or @lasconic

If you find this software useful, buy me a beer or a computer

Supported:

Multiple staves & voices, invisible staff not exported
Notes, rests, accidentals, dots, time signature
Key signature (not the customized ones)
Clefs included octave shift
Tie & slurs, triplets
Line breaks
Lyrics
Metadata: Title, author, lyricist, copyright1
Staccato, tenuto & accent, noteheads
Dynamics (mf, p ...) & custom texts
Midi info for staff

Not supported (yet?). Any priority? Contact me.

Chordnames, Grace notes, Beaming
Flow control : Coda, Segno, ...
Dynamic variation & tempo
Layout information

NoteWorthy text file to musicXML converter