tools.studio

MP3 to OGG

Re-encodes MP3 to Opus inside an OGG file, right here in the browser.

Drop an MP3 file here

Everything happens on your device — your files are never uploaded.

How it works

  1. 1 Drop your MP3 file or pick it from your device.
  2. 2 Hit Convert to OGG and watch the progress bar encode.
  3. 3 Download your OGG file. It never leaves your browser.

Built with open source

  • Mediabunny — Converts and edits video and audio in the browser via WebCodecs. Add-on encoders cover MP3, AAC, and FLAC. · MPL-2.0

Frequently asked

Why convert MP3 to OGG? +

OGG with the Opus codec is usually smaller than MP3 at the same perceived quality. Opus is also open and royalty-free, and well supported on the web and Android.

Will the conversion reduce quality? +

Both MP3 and OGG/Opus are lossy, so transcoding adds a little loss on top of the MP3. At a normal bitrate you usually can't hear the difference.

Is my MP3 uploaded to a server? +

No. The audio is decoded and re-encoded to Opus in your browser with WebCodecs. It never leaves your device.

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