M4R is an AAC ringtone near 40 seconds long. Trim your FLAC to the clip you want first, then convert for an iPhone ringtone.
About FLAC
Lossless compressed format
FLAC uses lossless compression, cutting file size roughly in half while keeping the original audio quality. It is widely used by audiophiles and for archiving.
- Lossless, identical to the source
- Much smaller than WAV
- Some older players lack support
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
FLAC to M4R FAQ
Will converting FLAC to M4R lose quality?
Converting lossless FLAC to lossy M4R will introduce quality loss. For best results, choose a higher bitrate in the advanced settings.
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 FLAC to M4R?
Just drop multiple FLAC files in; they are converted to M4R one by one via a queue. You can download them individually or as a single ZIP.