Free online RTX to OGG converter

RTX ringtone files contain note instructions rather than recorded sound, so an audio player or editor may not open them as audio. Convert one to OGG when a device or application needs a playable sound file; conversion renders the notes into audio.

What the RTX format is

In audio, RTX commonly refers to a text-based mobile ringtone format related to RTTTL (Ring Tone Text Transfer Language). It stores a ringtone name, tempo and note sequence, not sampled audio. RTX files are encountered in collections of older phone ringtones and can be created or edited with ringtone composers that support the format.

What the OGG format is

OGG is a multimedia container commonly used for Vorbis-compressed audio. OGG Vorbis files are playable in many desktop and mobile applications and are generally smaller than uncompressed audio, making them useful for sharing and storage. Unlike RTX, OGG contains rendered sound.

How to convert RTX to OGG

Online on 101convert.com

1. Open the RTX-to-OGG converter on 101convert.com and upload the RTX file.
2. Choose OGG as the output format and start the conversion.
3. Download the resulting OGG file when processing finishes. The page supports batch conversion; check its displayed per-file size limit before uploading.

Offline with desktop software

RTX is ringtone notation, so it must first be interpreted and rendered; a direct audio encoder such as FFmpeg cannot turn the note text into sound by itself. Use an offline converter that explicitly supports RTX or RTTTL and export the ringtone as MIDI or WAV. For a MIDI export, render it locally with TiMidity++, available for Linux, macOS and Windows:

1. Open the RTX file in the ringtone converter and export it as ringtone.mid.
2. Render the MIDI to WAV: timidity ringtone.mid -Ow -o ringtone.wav.
3. Encode the rendered audio as OGG Vorbis with FFmpeg: ffmpeg -i ringtone.wav -c:a libvorbis -q:a 5 ringtone.ogg.

If the converter exports WAV directly, skip MIDI rendering and run the FFmpeg command with that WAV file as the input.

Quality and compatibility

The source contains symbolic notes, not an original recording, so the converter’s synthesizer determines the sound and instrument timbre. OGG quality settings affect the rendered audio, not the accuracy of the note sequence; retain the RTX file if you need to preserve editable ringtone notation.