How to convert AIFF in MP3

10 min read


Those in AIFF format (acronym for Audio Interchange File Format) are uncompressed audio files: this means that they ensure excellent sound quality, but have a much greater weight than MP3 or other compressed audio formats.

That’s why today I want to explain how to convert AIFF to MP3 , using some free applications that allow you to process these files and reduce their weight considerably, without catastrophic upheavals on sound quality.

Let me be clear: some compromises on audio cleanliness must necessarily be accepted, but I assure you that, thanks to the indications I am about to give you, you will succeed in the enterprise without too many regrets. So? Ready to start? Yup? Great! Let’s ban the chatter and proceed!

How to convert AIFF to MP3

Are you interested in understanding how to convert AIFF to MP3 from your computer, using programs dedicated to the purpose? Then I suggest you consider the software that you find listed below: there are both for Windows and for macOS and Linux , and they are all very easy to use. Try them now!

Fre:ac (Windows/macOS/Linux)


The first application that I suggest you use to perform the operation covered by this tutorial is called  Fre:ac . It’s free, open source and combines a very easy-to-use user interface with advanced features that allow you to convert all the main audio file formats between them. It is available for Windows, macOS and Linux.

To download Fre:ac on your PC, connect to the program’s website and click on the Downloads link in the sidebar on the left, then select the Self-extracting installer: freac-xxxx.exe link (if you’re using Windows) or the Binary one. dmg image: freac-xx-alpha-xxxxxxxxx-macosx.dmg (if you are using macOS).

When the download is complete, if you are using Windows, open the .exe file obtained and, in the window that appears on the desktop, press the Yes and Next buttons, then click again on the Yes button , then on the Next button (four times in a row ) and completes the setup by pressing the Finish button. After that, launch the program by double-clicking the shortcut that has been added to your desktop.

If you’re using macOS , open the downloaded .dmg package and drag the Fre:ac icon  (the one with the program logo ) to your computer’s Applications folder . Then right-click on it and choose the Open item from the menu that appears, in order to go around the limitations imposed by Apple on applications from non-certified developers (an operation that must be performed only on first start).

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Once the Fre:ac main window is displayed, drag the AIFF songs to convert onto it, or add them “manually” by clicking on the button with the white sheet and the [+] symbol located in the upper left.

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Therefore, indicate the folder in which to save the songs after conversion, by clicking on the  Browse button  located at the bottom right, and start the transformation of the files, by pressing the arrow located next to  the green play button  and selecting the  Lame MP3 encoder item  present in the menu that opens.

If you want to adjust the quality level of the MP3 files to be obtained, click on the  wrench icon at the top, select the  Lame MP3 Encoder  item from the drop-down menu in the Encoders tab (in the window that opens) and press the  Set button . I recommend: touch these settings only if you know where you’re putting your hands (in any case, know that, for the bitrate, 192kbps is the minimum threshold for obtaining good quality audio, 320kbps the ideal choice if you don’t want to accept too many compromises ).

iTunes (macOS/Windows)


It is practically impossible not to mention iTunes when it comes to converting AIFF to MP3, considering that the former is a format developed by Apple and that the software in question, totally free, is the default player for “bitten apple” computers , as well as the tool to manage iPhone, iPad and iPod. iTunes comes standard with macOS and is available as a free download on Windows.

To use it, if you’re using a Mac , start it by clicking on its icon (the one with the white background and the multicolored musical note ) present in the Launchpad . If, on the other hand, you are using Windows , you must first download the program and follow the relative setup procedure.

If you use Windows 10 , access the relevant section of the Microsoft Store and press the Get and Open buttons . If you are using Windows 8.1 or a previous version of the Microsoft operating system , instead, go to the Apple website, click on the 64-bit Download button (or select the Download the app from here link if you are using 32-bit Windows) and proceed with the installation, as I explained in detail in my guide on how to install iTunes.

Once the iTunes window appears on the screen, click on the Preferences item in the iTunes menu (on macOS) or in the Edit menu (on Windows), at the top left. In the further window that opens on the screen, click on the Import settings button found in the General tab , select MP3 encoder from the Import using drop-down menu and adjust, if you want, the audio quality of the output file using the adjacent menu (I recommend always 192kbps or 320kbps ). Finally, confirm the changes made by pressing the OK button per due volte consecutive.

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Now, if the AIFF songs to be converted are already present in the iTunes library, you can go directly to reading the next paragraph. Otherwise, go to the Music section of the app by selecting the latter from the drop-down menu at the top right, select the Library item at the top, the Songs item on the left and drag the audio files into the program window.

Now you have to select all the songs of your interest, holding down the cmd key (on macOS) or Ctrl (on Windows) and clicking on it with the mouse, then you have to press on the File menu , located at the top left, and select the items Convert and Create MP3 version from the latter.

Then wait for the conversion procedure to complete, then select the songs converted to MP3 and, very simply, drag them out of the iTunes window, dropping them in the location where you want to save them.

If in the iTunes library you can no longer distinguish MP3 songs from those in AIFF format, because they have the same name, I inform you that you can easily remedy this by consulting the file properties: to do so, right click on each song, select the item Song information from the context menu and go to the File tab of the new window that appears: you can get the information you need from there.

MediaHuman Audio Converter (Windows/macOS)

MediaHuman Audio Converter

In the unfortunate event that you encounter problems in converting AIFF to MP3 with the resources that I have already pointed out to you, you can turn to MediaHuman Audio Converter : another very powerful and easy-to-use free converter that can “digest” all the main audio formats sound files. It is available for both Windows and macOS.

To download MediaHuman Audio Converter on your computer, connect to its official website and click on the button with the logo of the operating system you are using, at the bottom left.

Once the download is complete, if you are using Windows , open the .exe file obtained and click on the Yes button in the window that appears on the screen. After doing this, select the item I accept the terms of the license agreement and complete the setup by pressing the Next (four consecutive times), Install and Finish buttons .

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On macOS , on the other hand, open the .dmg package obtained and drag the program icon (the one with the MediaHuman Audio Converter logo ) into the Mac Applications folder . Then, right-click on it and select the Open item from the menu it is shown to you, so as to start the application, however going around the limitations imposed by Apple on applications from non-certified developers (an operation that must be performed only on first start).

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Now that, regardless of the operating system used, you see the MediaHuman Audio Converter window on the screen, drag your AIFF files onto it, or select them “manually” by pressing the [+] button located at the top. After doing this, click on the button for choosing the output format  located at the top and, in the further window that opens, select the MP3 option from the drop-down menu located on the left. If you want, with the pull-down menu on the right you can also adjust the quality of the output files (e.g. 320 kbps , 256 kbps etc.).

To conclude, first click on Close , then on the icon of the two arrows located at the top right and wait for the conversion to complete. By default, files will be saved in the  Music folder . If you want, you can change this behavior by clicking on the wrench button at the top, going to the Output tab of the window that opens, pressing the […] button in the Output folder section and choosing the folder you prefer.

Come convertire AIFF in MP3 online

You don’t want or can’t download new programs to your computer and would therefore like to know if there are tools to convert AIFF to MP3 online , directly from the browser? The answer is yes: try the resources listed below immediately.

Online Convert

Online Convert

The first of the online services useful for converting AIFF to MP3 that I want to suggest you try is Online Convert : it is an Internet site that provides its users with numerous tools for converting many different file types, including audio files. It’s free, requires no registration and is also quite intuitive.

To use Online Convert, connect to the site page dedicated to MP3 conversion and drag the AIFF file you want to convert into the green rectangle at the top. Alternatively, you can select the song “manually” by pressing the Choose file button , or you can download it from the Internet, from your Google Drive account , from your Dropbox account or by providing the URL by clicking on the appropriate links.

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Subsequently, if you deem it appropriate, use the Change audio bitrate drop-down menu to  adjust the quality of the output file, the menus next to the Change sampling rate and Change audio channels items to make other changes to the output file and the other items below to trim the song and normalize its audio. Then click the  Convert file button to start the conversion.

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At the end of the procedure, the download of the converted audio file will start automatically. If this does not happen, you can force the thing by clicking on the Download button , which in the meantime should have appeared on the screen.

Another resource I suggest you try, to convert AIFF files to MP3 from browser, is . It’s free and allows you to intervene on all the main audio formats on the market. It is very easy to use and also has a very well designed user interface.

To use it, go to its main page and drag and drop the AIFF files you want to convert. Alternatively, select files “manually”, by clicking on the [+] button .

Then click on the drop-down menu next to the item to , corresponding to the file name, select the Audio tab in the box that opens and choose the MP3 option . If you had previously uploaded several files, you can set the MP3 format for all of them at the same time by selecting it from the menu next to the Convert all files to item .

Finally, click the Convert button located at the bottom and wait for the conversion to complete. After doing this, you will be able to locally download the MP3 songs obtained by clicking on the Download all button .

App per convertire AIFF in MP3

And what about smartphones and tablets? Are there any apps to convert AIFF to MP3 without going through PC? Yes, of course! To find out which ones, both for Android and iOS , continue reading.

Media Converter (Android)

Media Converter

If you’re using an Android smartphone or tablet , I highly recommend you consider using Media Converter , a free and very easy-to-use app that lets you convert video and audio files to and from virtually any format. It also allows you to set its bitrate, sampling and other parameters, all at no cost.

To download it to your device, access the relevant section of the Play Store and press the Install button . Then start the app by pressing the Open button that appears on the screen, or by selecting the relative icon  (the one with the app logo ) that has just been added to the drawer (the Android screen in which all the apps are grouped).

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Now that you are viewing the Media Converter main screen, select the AIFF file on your device that you want to convert, using the file manager available on the screen, tap the Convert to mp3 button and wait for the conversion procedure to start and complete. By default, the final file is saved in the same location as the original one.

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If you intend to customize the parameters of the output file before starting the conversion, tap the Expert mode button , select mp3 from the Output Profile drop-down menu and make all the necessary customizations regarding duration, quality, etc. , using the various options available. Finally, press the Convert button .

The Audio Converter (iOS)

The Audio Converter

If you’re using an iOS device , you can convert an AIFF song to MP3 with The Audio Converter app : it’s a no-cost and very easy-to-use application that allows you to convert all the popular audio file formats.

It should be noted that the songs are processed on the company’s servers but, once the conversion is complete, they are removed instantly. Another thing to take into account is the fact that the app is free, but that to work on files weighing more than 5 MB you need to unlock its Premium version, through in-app purchases (at a cost of 5.49 euros each one-off).

That said, to download the application to your device, visit the relevant section on the App Store, press the Get / Install button and authorize the download using  Face ID , Touch ID or Apple ID password . Then press the Open button that appears on the screen or select the related icon (the one with the logo ) that has just been added to the home screen to start the app.

At this point, select the location where the song in AIFF format you want to convert is located (from another app, URL, iTunes library, computer or Files app), by pressing the corresponding button , and select the . _

Finally, select the MP3 Audio (.mp3) option from the A drop-down menu and tap the Convert button located at the bottom. At the end of the conversion procedure, choose the location in which to save the MP3 file obtained by pressing the  Open in button . Alternatively, press the  Share button  to share it via WhatsApp, Messenger, etc.

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