Why does the first run take a moment?

The first use downloads the FFmpeg engine (about 30 MB) into the browser cache; later runs skip the download.

Which format sounds best?

WAV and FLAC are lossless with the best quality but large files; MP3 at 320 kbps or AAC at 256 kbps is enough for almost every use.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

🔁Convert Audio - MP3/WAV/AAC/FLAC/OGG Converter Online

Convert between common audio formats: MP3, WAV, M4A/AAC, FLAC, OGG and OPUS. You can also drop in a video file to extract its audio. FFmpeg runs inside your browser; nothing is uploaded.

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How to use Convert Audio

1Select audio (or video) files
2Choose the target format and bitrate
3Click start, wait for processing and download

FAQ

Why does the first run take a moment?: The first use downloads the FFmpeg engine (about 30 MB) into the browser cache; later runs skip the download.
Which format sounds best?: WAV and FLAC are lossless with the best quality but large files; MP3 at 320 kbps or AAC at 256 kbps is enough for almost every use.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.