Free Online Audio Converter

Convert mp3, wav, m4a, flac, ogg and aiff in any direction.

Free to use on Mac, Windows, and mobileNo installation requiredTLS encryption keeps your files safe

What is this tool

AudioToolKit converts audio files online for free, in any direction between MP3, WAV, M4A, FLAC, OGG and AIFF. Upload one or more files, pick the output format, and download the result — no install and no account needed for single files, with uploads deleted automatically. WAV, AIFF and FLAC output stays lossless, so conversion does not have to cost you quality.

Drag and drop your files here

MP3, WAV, M4A, AAC, OGG, FLAC, AIFF, AIF, OPUS, WMA, AMR — up to 25 MB per file

Output format

Output

MP3, WAV, M4A, FLAC, OGG or AIFF

Accepted formats

.mp3, .wav, .m4a, .aac, .ogg, .flac, .aiff, .aif, .opus, .wma, .amr

Why use this free tool

A player, a DAW or a phone often wants one specific format. Drop the files in, pick the output, and download audio encoded for that target. Batch conversion is available on Pro.

How does the free convert audio work?

1
Add one or more audio files.
2
Choose the output format.
3
Press Convert and download the new files.

Frequently asked questions

Which conversions are supported?

MP3, WAV, M4A, FLAC, OGG and AIFF can be both the source and the target. Dedicated pages cover common pairs such as MP3 to WAV.

Will converting reduce quality?

WAV, AIFF and FLAC stay lossless. MP3, M4A and OGG are encoded at a high bitrate suitable for listening and sharing.

Can I convert several files at once?

Pro and Team can batch up to 20 files. Free converts one file at a time.