Free Online Audio File Converter
Quick & easy format converter for your audio files

Maztr's free online Audio File Converter is a quick and easy tool you can use right in your browser, without downloading any software, to convert your audio files from one format to another. No account or login is required to use it.

The Audio File Converter is designed to convert between most major audio formats — .wav, .mp3, .aac, .aiff, .au, .flac, .m4a, .ogg, .raw and .wma.

We have many more free tools for your audio files. Click here to check them out.

Enter Settings Paid User? Please log in here before continuing.

Upload Audio File:

  • Output Format:

  • Bitrate:

.wav, .mp3, .aac, .aiff, .au, .flac, .m4a, .ogg, .raw or .wma
Max size: 50MB
(Upgrade to 300MB)

Download Converted File

After you upload an audio file, you will be able to download your converted file here.

How do I use the Audio File Converter?

  1. In the "Upload Audio File" section above, drag and drop or click to select the file from your local device.
  2. If you want to change your selected audio file, hover or click the file then click "Remove".
  3. Choose your file conversion settings. You can convert between any two formats shown in the dropdown menu.
  4. Click the "Upload" button to submit your file for processing.
  5. Finally, click the "Download" button to download your converted output file.

Why do I need to use an audio converter?

Maztr uses 2 main audio file formats — WAV and MP3 — however sometimes you may have audio files in other formats. Our Audio File Converter makes it easy to convert them to the format you need.

Which audio formats are the best?

Audio formats come in two categories — "lossless" and "lossy". Lossless formats are best because they maintain the full audio quality of the original source material, whereas lossy formats delete data to reduce file size at the expense of sound quality.

WAV files are lossless and the format we recommend for Mastering, however other formats such as FLAC and AIFF are also lossless. On the other hand, file formats such as MP3, AAC and OGG are lossy so they are not recommended for music production, particularly when Mixing and Mastering. They are best used where smaller file sizes are important or when sound quality doesn't matter so much, such as playing music in the car.

Which audio formats does it convert?

These are the file formats currently available:

Lossless Formats
WAV Waveform Audio File An uncompressed lossless format used for professional audio.
AIFF Audio Interchange File Format Similar to WAV files but only compatible with Apple.
FLAC Free Lossless Audio Codec A compressed lossless format.
AU Unix Audio File Audio file format used by Sun, Unix and Java.
RAW Raw Audio File Contains uncompressed, un-containerized audio using raw pulse-code modulation (PCM).
Lossy Formats
MP3 MPEG Audio Layer III The most popular, widely used and widely compatible format.
AAC Advanced Audio Coding Apple format similar to MP3.
OGG Ogg Vorbis More efficient than MP3 but not as popular.
M4A MPEG-4 Audio-only Common format for song downloads from Apple's iTunes Store.
WMA Windows Media Audio A proprietary audio format developed by Microsoft.