Some Apple apps, editors and upload forms ask for M4A, the AAC format iPhones and Macs use. This turns an MP3 into an M4A that plays in Apple Music, QuickTime and most modern players. It runs in your browser, so the file stays on your device.
Your file never leaves your device. Nothing is uploaded.
Drop an audio or video file here
Drop an .mp3 up to 500MB. It's converted on your device.
Conversion runs on FFmpeg, compiled to WebAssembly, inside this browser tab. Licences and source
No. Converting one lossy format to another can't add detail back, and it loses a little more. Pick the same bitrate as the MP3, or one step higher, to keep the difference inaudible.
Nowhere. The converter runs inside your browser tab, so the file is read and converted on your own device and saved straight back to it. It is never uploaded to Wave or anyone else, and we never see its name or contents.
Ringtones use the .m4r extension and must be 40 seconds or shorter. Trim the MP3 first, convert it to M4A here, then rename the file from .m4a to .m4r before adding it on your computer.
At the same bitrate it's about the same size. AAC usually sounds a little better than MP3 at the same bitrate, so you can choose a lower setting for a smaller file.
Related: Free Audio Converter That Never Uploads Your File · Free audio transcription · Free YouTube Transcript Generator
Product
Use Cases
Compare
All rights reserved
Made with love in New York City