Free Audio Converter Online
Convert audio between MP3, WAV, FLAC, AAC, OGG, M4A, OPUS and more, with adjustable bitrate. Conversion runs locally with FFmpeg.wasm — your audio files never leave your browser.
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Frequently Asked Questions
Is my audio uploaded anywhere?
No. Audio conversion uses FFmpeg.wasm in your browser, so your files stay on your device.
Which audio formats can I convert?
MP3, WAV, FLAC, AAC, OGG, M4A, OPUS, WMA and AIFF, with adjustable bitrate for lossy targets.
Can I set the MP3 bitrate?
Yes. Choose from 128 to 320 kbps under Advanced settings. 320 kbps is perceptually transparent for almost all listening.