Click to upload or drop an audio file
MP3, WAV, M4A, OGG, FLAC and more — converted in your browser, never uploadedVideo and audio are processed in your browser by FFmpeg (ffmpeg.wasm), free software under the GPL-2.0-or-later and MIT licenses — licenses & source.
About this tool
This free audio converter changes an audio file from one format to another — MP3, M4A (AAC), WAV, OGG or FLAC. Upload your file, choose the output format and quality, and download the converted audio.
Everything runs in your browser — your file is never uploaded, so it stays private and there are no size limits from a server.
Features
- Convert to MP3, M4A, WAV, OGG or FLAC
- Choose the bitrate (up to 320 kbps) for compressed formats
- Lossless output with WAV and FLAC
- Also extracts audio from a video file if you drop one in
- Preview both the original and the result before downloading
- 100% in-browser — nothing is uploaded
Common uses
- Convert M4A or WAV to MP3 for wider compatibility
- Turn a big WAV into a smaller MP3 or M4A
- Get a lossless FLAC from your source audio
- Make an OGG for the web or games
A note on the engine
Conversion uses an in-browser audio engine that downloads once (about 30 MB) the first time you use it. After that it works offline, and you can switch tabs while it runs — just keep this one open.
How to use it
- Upload an audio file — click the upload area or drag it in
- Choose a format — MP3, M4A, WAV, OGG or FLAC
- Set the quality — pick a bitrate for compressed formats
- Convert & download — play the result, then save it
