M4R is a short AAC ringtone. Converting to OGG frees it from the 40-second limit and the Apple-only use case — quality remains lossy, so set a decent bitrate.
About M4R
iPhone ringtone format
M4R is the ringtone format used by iPhone, essentially AAC audio limited to around 40 seconds, suited for creating custom ringtones.
- Usable directly as an iPhone ringtone
- Length-limited and single-purpose
About OGG
Open royalty-free lossy format
OGG (typically Ogg Vorbis or Ogg Opus) is a free, open audio container that usually outperforms MP3 at the same bitrate, ideal for license-sensitive use.
- Free and open, no patent restrictions
- Better than MP3 at equal bitrate
- Compatibility varies on some mainstream players
M4R to OGG FAQ
Will converting M4R to OGG lose quality?
Both M4R and OGG are lossy formats. Re-compression may further reduce quality — choose a higher bitrate to minimize additional loss.
Will the file size change after conversion?
Converting to a lossless format (WAV) usually increases size, while converting to a lossy format (MP3, AAC) usually decreases it, depending on the chosen bitrate and sample rate.
How do I batch convert M4R to OGG?
Just drop multiple M4R files in; they are converted to OGG one by one via a queue. You can download them individually or as a single ZIP.