Audio Converter
Convert audio between MP3, WAV, FLAC, M4A, AAC, OGG, Opus and more — right in your browser.
Everything ran in your browser — nothing was uploaded.
How to use the Audio Converter
- Drop in an audio file — almost any format works.
- Choose the format to convert to (and the bitrate for lossy formats).
- Click Convert and download the result.
About the Audio Converter
The Audio Converter changes an audio file from one format to another, right in your browser. Drop in almost anything — MP3, M4A, AAC, OPUS, OGG, WAV, FLAC, WMA, AIFF, AMR, CAF and more — and convert it to MP3, WAV, FLAC, M4A, AAC, OGG (Vorbis), Opus, AIFF, AC3, WMA or AU. For lossy targets you can pick the bitrate to trade size against quality. It uses a WebAssembly build of ffmpeg, so your file is never uploaded — it is private, free, and has no watermark.
Reach for it when a device or app will not play your file (OPUS from WhatsApp, M4A from an iPhone), when you need a smaller MP3 to share, or when a program wants a specific format like WAV or FLAC. Because the work runs on your own device, everyday music and voice files convert quickly; very long recordings take longer. The audio engine is downloaded once (and shared with the video tools) then cached, so repeat conversions start fast.
Frequently asked questions
Is my file uploaded?
No. Conversion runs entirely in your browser with ffmpeg (WebAssembly). Your audio never leaves your device.
Which formats can I convert to?
MP3, WAV, FLAC, M4A (AAC), AAC, OGG (Vorbis), Opus, AIFF, AC3, WMA and AU. Input can be almost any audio or video file.
How do I keep the best quality?
Convert to a lossless format (WAV, FLAC or AIFF) to keep full quality, or choose a high bitrate (256–320 kbps) for lossy formats like MP3.
Can it pull audio out of a video?
Yes — drop a video in and convert to an audio format. For more control, use the Video to MP3 tool.