What formats are supported?

MP3, OGG (Vorbis), WAV (PCM 16-bit) and AAC (M4A). Conversion is 100% browser-based via FFmpeg.wasm.

Are my files sent to a server?

No, everything is processed locally in your browser. No audio data leaves your device.

The limit depends on your browser's memory. Files up to ~100 MB generally work well.

🇬🇧WebFileTools/Audio Converter

Convert audio files between MP3, OGG, WAV and AAC. 100% browser-based with FFmpeg.wasm.

Drop an audio file or click to select

Output format

Bitrate

The audio converter transforms your files between MP3, OGG, WAV and AAC formats via FFmpeg.wasm, entirely in your browser.

Drop your audio file, choose the output format and bitrate, then start the conversion. Download the result in one click.

What formats are supported?: MP3, OGG (Vorbis), WAV (PCM 16-bit) and AAC (M4A). Conversion is 100% browser-based via FFmpeg.wasm.
Are my files sent to a server?: No, everything is processed locally in your browser. No audio data leaves your device.
Is there a file size limit?: The limit depends on your browser's memory. Files up to ~100 MB generally work well.

Extract the audio track from a video file (MP4, MKV, AVI…) to MP3, OGG or WAV. 100% browser processing via FFmpeg.wasm.

Cut and extract a portion of an audio file (MP3, OGG, WAV…). Selection by range sliders, 100% browser via FFmpeg.wasm.

Normalize the volume of your audio files via WebAudio API. Adjust target level in dB, WAV export. 100% browser.