How to use the iPhone Audio converter
- Choose the audio file.
- Keep 256 kbps, the same quality Apple uses for iTunes Store music.
- Convert and download the M4A.
- Add it to Apple Music on a Mac or PC, or save it to the Files app.
Why M4A for iPhone?
M4A with AAC is Apple's native music format. It shows title, artist and artwork in Apple Music, and sounds slightly better than MP3 at the same size. For lossless music use FLAC to ALAC instead.
Good to know
Output is MP4 with H.264 video (yuv420p, the colour format every player supports), AAC stereo at 48 kHz, and the index moved to the start of the file so playback and uploads begin immediately.
Supported files
Any common audio or video file: MP4, MOV, MKV, WEBM, AVI and other video formats, and MP3, WAV, M4A, FLAC, OGG, OPUS, WMA and other audio formats. Files up to 1 GB each.
Frequently asked questions
Can I make a ringtone?
Use the Ringtone Maker or MP3 to M4R; ringtones need the .m4r format and must be 40 seconds or shorter.
Do I have to pay or sign up to use the iPhone Audio Converter?
No. There is no account, no payment and no watermark. The only limit is 1 GB per file, set by what browsers can handle.
Is my file uploaded to a server?
No. The converter runs inside your browser using WebAssembly, so your file is processed on your own device and never sent to us or anyone else.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.