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Audio Converter

Convert between MP3, WAV, FLAC, M4A, AAC, OGG and OPUS.

Tap to choose an audio file

MP3, WAV, FLAC, M4A, OGG, AAC, OPUS · converted locally

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Free Online Audio Converter

Convert audio between all the popular formats — MP3, WAV, FLAC, M4A, AAC, OGG and OPUS — without installing any software. Everything runs in your browser using WebAssembly, so your files are never uploaded to a server. That keeps your audio private and means there are no file-size caps beyond what your device can handle.

Whether you need to turn a FLAC into MP3 for your phone, convert WAV to MP3 to save space, or get an M4A to MP3 for an app that won't play Apple audio, this converter does it in a couple of clicks — and lets you choose the bitrate for the perfect balance of quality and file size.

How it works

1

Drop your file

Choose any audio file. It's processed locally and never uploaded.

2

Pick format & quality

Select the output format and, for compressed formats, your preferred bitrate.

3

Convert & download

Click convert and your new file downloads automatically when it's ready.

Frequently asked questions

Is the audio converter free?
Yes — it's completely free with no signup and no watermarks.
Are my files uploaded to a server?
No. Conversion runs entirely in your browser with WebAssembly, so your audio never leaves your device.
Which format should I choose?
For universal playback and small files use MP3; for Apple devices use M4A/AAC; for maximum efficiency use OPUS. Choose FLAC or WAV when you want lossless quality for archiving or editing. Converting a lossy file to FLAC won't restore detail that was already lost.
Why is the first conversion slower?
The first time you convert, your browser downloads the ~30 MB conversion engine. It's cached afterwards, so later conversions start instantly.