How to Convert M4A Files to WAV Format

Converting M4A to WAV on Windows, Mac, or Online

You can convert an M4A file to WAV format using free software that runs on your computer, or through a web-based converter that requires no installation. M4A is a compressed audio format often used by Apple devices and iTunes, while WAV is an uncompressed format that works with almost any audio player or editing software. The conversion takes a few minutes and produces a file that is larger than the original M4A but plays on older devices and professional audio equipment.

The method you choose depends on what you have available right now. If you want to avoid downloading anything, an online converter works in your web browser. If you prefer to keep files on your computer and convert multiple files at once, desktop software is faster and more reliable.

Key Takeaways

M4A files are compressed audio; WAV files are uncompressed and much larger, but compatible with more devices and audio software.
Online converters work in your browser with no installation, but desktop software is faster if you have many files to convert.
On Windows, Audacity (free) and VLC (free) both convert M4A to WAV in a few clicks.
On Mac, iTunes itself can convert M4A to WAV, or you can use Audacity or VLC like Windows users.
The converted WAV file will be 5 to 10 times larger than the original M4A file.

Converting M4A to WAV Using Audacity (Windows and Mac)

Audacity is a free audio editor that opens M4A files and exports them as WAV. Download Audacity from audacityteam.org, install it, and open the program. Go to File > Open and select your M4A file. Audacity will load the audio waveform into the editor window.

Once the file is open, go to File > Export > Export as WAV. Choose where you want to save the new WAV file, give it a name, and click Save. Audacity will ask you about audio settings — the default choices work fine for most purposes. Click Export and wait for the conversion to finish. The new WAV file will appear in the folder you selected.

If Audacity tells you it cannot open your M4A file, your copy of Audacity may not have the right decoder installed. Close Audacity, go back to audacityteam.org, and download the version that includes FFmpeg support. This adds the ability to read M4A and other compressed formats.

Converting M4A to WAV Using VLC (Windows and Mac)

VLC is a free media player that also converts audio files. Download it from videolan.org, install it, and open the program. Go to Media > Convert/Save (on Mac, go to File > Convert/Stream).

Click Open Media, find your M4A file, and click Open. Back in the Convert window, click the dropdown next to Profile and select Audio - WAV. Choose a folder where you want the WAV file to save by clicking Browse next to Destination File. Give the file a name and click Start. VLC will convert the file in the background — you can close the window and come back when it is done.

Converting M4A to WAV Using iTunes (Mac Only)

If you use a Mac and already have iTunes installed, you can convert M4A to WAV without downloading anything else. Open iTunes and go to iTunes > Settings (or Preferences on older versions). Click Files and look for the Import Settings button. In the dropdown menu that appears, select WAV Encoder and click OK.

Now go back to your iTunes library, right-click the M4A file you want to convert, and select Create a WAV Version. iTunes will create a new WAV file in your library with the same name as the original. You can then locate this file on your computer by right-clicking it and selecting Show in Finder.

Converting M4A to WAV Online (No Installation Required)

If you do not want to install software, online converters work in your web browser. Go to cloudconvert.com or zamzar.com, click the upload button, and select your M4A file. Both sites let you choose WAV as the output format. Click Convert or Start, and the site will process your file. When it is done, download the WAV file to your computer.

Online converters are convenient for one or two files, but they are slower than desktop software and require uploading your file to someone else's server. If your M4A file contains personal recordings or music you want to keep private, use desktop software instead. Most online converters delete your files after a few hours, but there is always a small risk when uploading to the internet.

Why Your M4A File Might Not Convert

The most common problem is that your audio software does not recognize M4A as a valid format. This happens when you download Audacity without FFmpeg support, or when you try to use very old software. The solution is to download the right version of Audacity or use VLC instead, which handles M4A files by default.

Another issue is that some M4A files are protected by digital rights management (DRM), which prevents copying or conversion. These files usually came from the iTunes Store before 2009. If your M4A file will not convert and you own it, contact Apple Support or try a different converter — some handle protected files differently. If the file is not yours, you cannot legally convert it.

Understanding File Size After Conversion

Your new WAV file will be much larger than the original M4A. A typical M4A file that is 5 megabytes will become 40 to 50 megabytes as a WAV file. This is normal and expected — WAV stores audio without compression, so it takes up more space. Make sure you have enough free storage on your computer or external drive before converting large music libraries.

If file size is a problem, you can delete the original M4A after confirming the WAV conversion worked. However, keep the M4A if you might need to convert to a different format later, since converting WAV back to M4A will not improve the quality — the audio information is already lost from the original compression.

Frequently Asked Questions

Will converting M4A to WAV improve the sound quality?

No. WAV is uncompressed, but it cannot restore audio information that was removed when the M4A was created. The sound quality stays the same — you are just storing it in a different container. Convert only because you need WAV format for a specific device or software, not to make the music sound better.

Can I convert multiple M4A files to WAV at once?

Yes. In Audacity, you can use the Batch Processor feature (under Tools > Batch Processor) to convert many files in one operation. In VLC, you can add multiple files to the Convert queue. Online converters usually handle one file at a time, so desktop software is faster if you have dozens of files.

What devices play WAV files?

Almost all devices and software play WAV — computers, phones, tablets, car stereos, and professional audio equipment all support it. WAV is the standard format for audio editing and recording, so if you need to edit your audio in software like Audacity or Adobe Audition, converting to WAV first makes the process easier.

Do I need to keep the original M4A file after converting?

You can delete it if you are sure the WAV conversion worked and you do not need the smaller file size. Keep the M4A if you might want to convert to a different format later, or if the file came from iTunes and you want to preserve your original purchase.

Is it safe to use online converters?

Most online converters are safe and delete your files automatically after a few hours. However, you are uploading your file to someone else's server, which carries a small privacy risk. If your audio contains personal recordings or sensitive information, use desktop software like Audacity or VLC instead, which keeps everything on your computer.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.