TeraConvertTeraConvert

Audio Converter for Mac

WAV, FLAC, AAC, OGG, and MP3, converted on your Mac with nothing uploaded. Trim, fade, and volume are built in before the file is written.

Conversion Successful
100% local. Your file is processed in this tab and never uploaded.

Why convert on your Mac instead of online

Which format you want depends on where the audio is going. Editing in Logic or Audacity means WAV, because uncompressed samples survive being cut, pitched, and re-saved without picking up a new layer of compression artifacts every time you touch them. Archiving means FLAC, lossless and about half the size. Sending it to someone, or driving to work with it, means MP3 or AAC.

The hard part is doing it without handing the recording to a stranger's server, which is the normal price of a free online audio converter. Here the decode and the encode both happen in the tab. Your file stays put. Trim ranges, fades, and volume changes are applied while the new file is written, so there is no second render and no extra generation of loss from converting the same audio twice.

Audio conversions, one page each

Frequently Asked Questions

Which audio formats can I convert on a Mac?
In the browser: MP3, WAV, FLAC, OGG, AAC, and M4A in, and MP3, WAV, FLAC, AAC, or OGG out. The desktop app adds AIFF, WMA, Opus, CAF, and M4A output through FFmpeg.
Does converting lose quality?
Going to WAV or FLAC keeps everything the source had. Going to MP3, AAC, or OGG compresses, and compressing an already-compressed file twice is worth avoiding when you can start from the original.
Why is the browser limit 100 MB?
Uncompressed decoding holds the whole file in memory as floating point samples, and a long WAV or FLAC will exhaust the tab. The desktop app has no cap.
Can I fade a track in and out?
Yes. The editor has trim, fade in, fade out, and volume, and all of it is applied during encoding rather than as a separate step.
Is anything uploaded?
No. Conversion runs entirely on your device in both the browser and the app. The network is used for the page itself and, in the app, an occasional license check.

A library to convert, not one track?

The desktop app runs a whole folder through FFmpeg locally, adds AIFF and Opus, and drops the 100 MB browser limit.

Get TeraConvert for MacmacOS on Apple Silicon. One-time Pro purchase, 14-day money-back guarantee.