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M4R File Format

iPhone Ringtone category

M4R is Apple’s ringtone format — technically an AAC file capped at 40 seconds that iTunes and iPhones recognise as a ringtone.

Typical use: Converting MP3 to M4R is how you turn any song into a proper iPhone ringtone that syncs via Finder or iTunes.

About the M4R format

M4R is simply iPhone ringtone packaging: an AAC audio file (same as M4A) capped at 40 seconds, named .m4r so iOS treats it as a ringtone instead of a song. GarageBand and Finder sync are the supported paths to install one; the audio itself is ordinary AAC.

Practical workflow: pick the 30–40 second chorus you want, convert to M4R, sync it to the phone, and set it in Sounds & Haptics. Nothing about the audio changes — the extension and the length limit are the entire format.

Strengths

  • ✓ The native iPhone ringtone format
  • ✓ Simple — it is AAC with a new name

Limitations

  • ✗ Hard 40-second length cap
  • ✗ Installation requires sync or GarageBand
Compression
Lossy AAC
Quality
Same as M4A
Compatibility
iPhone only
Best for
iPhone ringtones

Convert M4R to…

26 direct directions plus 18 workflows, sorted A–Z; 🔥 marks popular targets.

M4R to AAC Hot M4R to AC3 M4R to AIF M4R to AIFF M4R to ALAC M4R to AU M4R to CAF M4R to E-AC3 M4R to F4A M4R to F4B M4R to FLAC Hot M4R to GSM M4R to M4A Hot M4R to M4B M4R to MP2 M4R to MP3 Hot M4R to OGA M4R to OGG Hot M4R to OPUS M4R to PCM M4R to TTA M4R to VOC M4R to W64 M4R to WAV Hot M4R to WAVPCM M4R to WV

Cross-engine workflows

M4R to 7Z M4R to APK M4R to JAR M4R to MKV M4R to MOV M4R to MP4 M4R to PNG M4R to PNG24 M4R to PNG8 M4R to TAR M4R to TAR.BZ2 M4R to TAR.GZ M4R to TAR.XZ M4R to TBZ2 M4R to TGZ M4R to TXZ M4R to WIM M4R to ZIP

Convert other files to M4R…

AAC to M4R Hot AC3 to M4R AIF to M4R AIFF to M4R ALAC to M4R AMB to M4R AMR to M4R APE to M4R AU to M4R AVR to M4R CAF to M4R CVS to M4R CVU to M4R DSS to M4R DTS to M4R E-AC3 to M4R F32 to M4R F4A to M4R F4B to M4R F64 to M4R FAP to M4R FLAC to M4R Hot FSSD to M4R GSM to M4R GSRT to M4R HCOM to M4R HTK to M4R IRCAM to M4R M4A to M4R Hot M4B to M4R MAUD to M4R MOD to M4R MP2 to M4R MP3 to M4R Hot OGA to M4R OGG to M4R Hot OMA to M4R OPUS to M4R PAF to M4R PVF to M4R QCP to M4R S16 to M4R S24 to M4R S32 to M4R S3M to M4R SD2 to M4R SHN to M4R SMP to M4R SNDR to M4R SNDT to M4R SPX to M4R TAK to M4R TTA to M4R TXW to M4R U8 to M4R VMS to M4R VOC to M4R VQF to M4R W64 to M4R WAV to M4R Hot WAVPCM to M4R WMA to M4R WV to M4R WVE to M4R XI to M4R XM to M4R

Cross-engine workflows

3G2 to M4R 3GP to M4R ASF to M4R AVI to M4R DivX to M4R DV to M4R F4V to M4R FLV to M4R H.264 to M4R M1V to M4R M2TS to M4R M2V to M4R M4V to M4R MJPEG to M4R MKV to M4R MOV to M4R MP4 to M4R MPEG to M4R MPEG1 to M4R MPEG2 to M4R MPEG4 to M4R MPG to M4R MTS to M4R MXF to M4R OGV to M4R RM to M4R RMVB to M4R TS to M4R VOB to M4R WEBM to M4R WMV to M4R WTV to M4R Xvid to M4R Y4M to M4R

Frequently asked questions

What is a M4R file?

M4R is Apple’s ringtone format — technically an AAC file capped at 40 seconds that iTunes and iPhones recognise as a ringtone.

How do I convert M4R files online?

Pick a target format from the "Convert M4R to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.

Is it safe to convert M4R files here?

Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.

Which formats can M4R convert to?

This page lists all 44 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.