Audio File Converter
This audio converter lets you convert audio files such as MP3, FLAC, AAC, WAV, and more to other formats.
Ready to work on your audio?
Everything here runs in the browser, with no install and no sign-up.
Why convert audio here
Every common format
MP3, WAV, FLAC, AAC, M4A, OGG, OPUS, WMA and AIFF. Convert in any direction, including from video files.
Control the output
Set bitrate, sample rate and channels, or normalize the volume on export. Leave it on automatic if you prefer.
Nothing to install
It runs in your browser on any device. Transfers are encrypted and processing is fully automated.
How to convert an audio file
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Upload
Upload your audio file.
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Choose
Choose the format you want to convert your audio file to.
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Adjust
Adjust the optional settings, if available.
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Convert
Click "Start".
Lossy or lossless: which should you pick?
Lossless formats such as FLAC, WAV and ALAC keep every bit of the original recording. They are the right choice for archiving, mastering and anything you will edit again later.
Lossy formats such as MP3, AAC and OGG remove detail your ear is unlikely to notice. In exchange you get files a fraction of the size. They are the right choice for listening, sharing and uploading.
What bitrate should you convert at?
For music, 192-320 kbps keeps a lossy file close to indistinguishable from the source for most listeners on most equipment. For speech and podcasts, 96-128 kbps is usually enough and roughly halves the file size.
Variable bitrate (VBR) spends more data on complex passages and less on quiet ones. It usually gives better quality per megabyte than a fixed rate.
The bitrates you can choose, in kbps. A higher bitrate means better quality and a larger file.
Converting between lossy formats
Going from one lossy format to another re-encodes audio that was already compressed once. MP3 to AAC is the common case. A little more detail is lost each time.
Where you still have the original lossless file, convert from that instead. Where you do not, convert at the same bitrate or higher to keep the second generation as close as possible to the first.
Each lossy re-encode drops a little more detail, so convert from the original file when you still have it.
Audio conversion FAQ
Which audio formats can I convert between?
MP3, WAV, FLAC, AAC, M4A, OGG, OPUS, WMA, AIFF and more, in any direction. You can also convert the audio track out of a video file.
Is the audio converter free?
Yes. Everyday conversions are free and need no account. A subscription only adds larger files, batch processing and no waiting.
Can I convert several files at once?
Yes. Add as many files as you need and they are converted together, each returned as its own download.
Will converting reduce the quality?
Converting to a lossless format such as FLAC or WAV keeps everything. Converting to a lossy format loses a little detail, so choose a higher bitrate to minimize it.
Do I need to install any software?
No. Everything runs in your browser, so it works the same on Windows, macOS, Linux, Android and iOS.
What happens to my files after converting?
Uploads and results travel over an encrypted connection. Processing is automated with no human access, and nothing is shared with third parties.
Can I change the bitrate or sample rate?
Yes. Open the optional settings before starting to set bitrate, sample rate, channels and volume normalization.
Blog
How to Choose the Right Audio File Format
Learn the pros and cons of MP3, AAC, FLAC, and WAV, and discover online tools to convert, edit, and optimize your music with ease.
Read article