Free online IMY to RTTTL converter

Some ringtone editors and older mobile-phone tools accept RTTTL but not IMY, so an IMY ringtone must be converted before it can be imported or shared in that format. Both formats encode ringtone notes rather than recorded audio.

What the IMY format is

IMY is the filename extension commonly used for iMelody, a text-based mobile-phone ringtone format associated with early Ericsson and Sony Ericsson devices. It stores a melody as note events and ringtone metadata; files may come from older phones, ringtone editors, or archived mobile content.

What the RTTTL format is

RTTTL (Ring Tone Text Transfer Language) is a compact text format popularized by Nokia phones and ringtone tools. Its header sets the ringtone name, default note duration, octave, and tempo; the remaining text lists notes and rests. RTTTL is useful for editing, copying, and importing simple monophonic ringtones in compatible software.

How to convert IMY to RTTTL

Online on 101convert.com

1. Open the IMY-to-RTTTL converter page on 101convert.com and upload the IMY file.
2. Choose RTTTL as the output format and start the conversion.
3. Download the converted file. The page supports batch conversion, and displays a per-file size limit.

Offline with desktop software

For a local workflow, use a Python 3 script or a desktop utility that explicitly supports both iMelody and RTTTL; general audio editors do not convert these text-based ringtone formats. In a Python-based converter, open the IMY as text, extract the melody between its MELODY: field and END:IMELODY, then translate each supported iMelody note event to RTTTL notation. Set the RTTTL header’s name, default duration, octave, and tempo from the source metadata or the converter’s settings, save as a plain-text .rtttl file, and test it in the intended ringtone software.

For a short melody containing only standard notes, rests, and durations, the conversion is a notation translation: iMelody duration-first events such as 4c become RTTTL note events such as c when the default duration is 4; an iMelody rest becomes an RTTTL pause. A custom script must account for the actual IMY notation used by the file rather than treating the whole file as raw audio.

Compatibility and limitations

RTTTL supports a limited monophonic ringtone notation. Repeats, ornamentation, timing changes, or other IMY-specific controls may not have direct RTTTL equivalents; a converter can omit them or approximate them. Check the converted tempo, octave, and note lengths in the destination device or editor, since those settings affect playback even when the notes translate correctly.