All tools · Audio, Conversion

Audio Converter

Verified working · September 4, 2026

Convert audio between MP3, WAV, OGG, FLAC and AAC (M4A) — pick a format and download. Runs entirely in your browser — nothing is uploaded.

Click to choose a file or drag an audio file here

Supports .mp3, .wav, .ogg, .flac, .aac, .m4a, .wma, .opus

Runs on a real audio engine loaded into your browser (FFmpeg, compiled to WebAssembly) — about 30MB, downloaded once and cached for the rest of this visit. Nothing is uploaded; the conversion happens entirely on your device.

How it works

  1. Upload the audio file you want to convert.
  2. Choose the output format: MP3, WAV, OGG, FLAC, or AAC (M4A).
  3. For MP3, OGG and AAC, pick a quality from 128–320kbps — WAV and FLAC are lossless, so there's no quality setting to pick.
  4. Convert and download the new file.

Frequently asked questions

Which audio formats can I convert between?

Upload MP3, WAV, OGG, FLAC, AAC, M4A, WMA or OPUS, and convert to MP3, WAV, OGG, FLAC or AAC (M4A).

Will converting to MP3 or AAC reduce quality?

Those are lossy formats, so yes, slightly — pick 320kbps for the smallest quality loss. Converting to WAV or FLAC keeps full quality.

Can converting a lossy file to FLAC or WAV restore lost quality?

No — once quality is lost to a lossy format like MP3, converting it to a lossless format afterward can't bring it back. It just avoids losing any more.

Is my audio file uploaded anywhere?

No, conversion happens entirely in your browser — nothing is sent to a server.

Is there a file size or length limit?

No hard limit — since everything runs in your browser, the practical ceiling is your own device's memory, not a server quota.

Your files are never uploaded. Gotool.xyz runs entirely as JavaScript in your browser. Your files are processed in memory and never touch a server — nothing to breach, nothing to clean up. Close the tab and it's like it never happened. The only thing we count is which tool ran (just the name, e.g. "merge") so we know what people find useful — never your file, its name, its size, or anything in it.