About this tool
An audio converter changes sound into MP3, WAV, OGG, M4A with AAC, FLAC, or Opus. Select a bitrate for lossy formats when you need to balance sound quality and file size. You can also add a video file and extract its audio track directly into one of the supported outputs.
Audio processing runs locally with FFmpeg compiled to WebAssembly, so files are never uploaded and nothing remains after the tab closes. On first use, the browser downloads and then caches an engine of about 32 MB from a CDN. Jobs use one CPU thread, their speed depends on your device, and you may cancel processing at any time.
How to use the Audio Converter
- 1Choose an audio file or a video containing the track.
- 2Select MP3, WAV, OGG, M4A, FLAC, or Opus output.
- 3Pick a bitrate when the chosen lossy format offers that control.
- 4Start FFmpeg processing and cancel if you need to stop early.
- 5Download the converted audio or extracted video soundtrack.
Features
Six audio formats
Export MP3, WAV, OGG, M4A with AAC, FLAC, or Opus files.
Lossy bitrate selection
Choose an available bitrate for compressed formats to balance size and quality.
Video soundtrack extraction
Read a video file and save its audio track in your selected format.
Local WebAssembly transcoding
Use the browser-hosted FFmpeg engine rather than sending media to a server.
Reusable media engine
Cache the roughly 32 MB CDN download for later audio and video jobs.
Frequently asked questions
Can I convert a video file to MP3 audio?
Yes. Select the video as input, choose MP3, and the converter extracts and encodes its audio track.
Which audio output formats are supported?
You can create MP3, WAV, OGG, M4A using AAC, FLAC, or Opus output.
When does the bitrate setting apply?
Bitrate choices apply to lossy formats. Lossless output such as WAV or FLAC is not controlled the same way.
What are the audio converter file limits?
Files over roughly 500 MB can be slow or exceed available memory. Files larger than 2 GB are not accepted.
Are audio and video inputs uploaded?
No. Extraction and conversion happen in your browser through FFmpeg, and active work can be canceled.