Question 1

Is this audio converter free?

Accepted Answer

Yes. Convert as many files as you like and download results up to 100 MB each for free. There's no sign-up and no watermark.

Question 2

Are my files uploaded to a server?

Accepted Answer

No. Files are decoded and encoded in your browser with WebAssembly and the browser's own audio codecs, so they never leave your device. That also makes it fast: there's no upload or download wait.

Question 3

Which formats can I convert?

Accepted Answer

Input can be almost any audio or video file: MP3, WAV, M4A, AAC, OGG, Opus, FLAC, AIFF, WebM, MP4, MOV and MKV. Output can be MP3, WAV, M4A (AAC), OGG (Opus), FLAC, AAC or Opus.

Question 4

What bitrate should I choose for MP3?

Accepted Answer

192 kbps is a good default for music and sounds the same as the original to most people. Use 128 kbps for podcasts and speech, and 320 kbps if you want the highest MP3 quality. Bitrate has no effect on WAV and FLAC, which are lossless.

Question 5

Can I convert several files at once?

Accepted Answer

Yes. Drop several files and they're all converted with the same settings. The first result downloads free; Pro downloads the whole batch as one ZIP.

Question 6

Does converting to a higher bitrate improve quality?

Accepted Answer

No. Converting a 128 kbps MP3 to 320 kbps makes the file bigger but can't bring back detail that was already removed. Convert from the best source you have.

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