Both MP3 and AAC are standard lossy compression formats for audio files. MP3, aka MPEG-1 Audio Layer 3, is a coding format for digital audio. Audio files that are contained in MP3 formats have the extension of .mp3. AAC, short for Advanced Audio Coding, is a popular-used audio coding standard for audio compression. Besides .aac files, audio files that have the extension of .m4a, .m4v, .m4r, .3gp, etc. can be encoded in AAC as well.
Being regarded as the next in line to MP3, AAC comes with better audio quality than MP3 does under the same bit rate. That's no wonder Apple is one of the most frequent users of AAC, and use it as the default audio format for both iPhone and iPod. For users who want to have better audio quality, you can use AAC audio to appease your ears. Here, we listed up two useful methods for you to convert MP3 to AAC on Windows and Mac. Now, let's have a look at them one by one.
#1. How to Convert MP3 to AAC with VideoProc
OS: Windows (10, 8, 7), Mac (10.6 or later)
VideoProc is one-stop user-friendly software that specializes in processing all types of video and audio files within easy steps. You can import different audio formats in it and choose your desired format, and this fastest video converter will convert them in a flash. It nicely supports over 370 kinds of imput formats, exports to more than 420 formats, and can batch process different formats at a time.
VideoProc audio converter has the capability of converting between audio formats like MP3, AMR, WAV, OGG, FLAC, iPhone Ringtone, etc. with crystal clear Dolby Digital 5.1 channel surround sound. More than that, it can extract audio from video, and fast copy the audio bit by bit from the source to AAC, AC3, MP3, DTS, DTS-HD. In a word, it guarantees lossless sound quality to the best extent possible with fast conversion speed, allowing you to convert MP3 to AAC easily and efficiently.
Get VideoProc free on your Windows or Mac now, and start to convert MP3 to AAC within 4 simple steps:
Step 1. Open VideoProc on your computer.
Choose the Video option to enter the video and audio processing panel.
Step 2. Import MP3 file(s) into it.
You can either click on +Music and choose MP3 file(s) from the pop-up window. Or, you can easily drag and drop all MP3 files into the central panel.
A Warm Note:
If you have bunches of MP3 files waited to be converted to AAC, you can pack them in one file folder, and import the whole folder into VideoProc.
Step 3. Choose AAC as the output format.
Go to the Music box in the bottom toolbar, and choose the AAC format under it.
A Warm Note:
If you want a merged AAC audio file, remember to check on the Merge box before the export.
Step 4. Start to convert MP3 to AAC.
Click on RUN in the bottom right area of the interface and start to convert MP3 to AAC. After all AAC audio files are converted, they will be shown on a pop-up window where you can easily access to.
#2. How to Convert MP3 to AAC in iTunes
OS: Windows, Mac (macOS 10.14 Mojave and lower)
iTunes is a multimedia player and content manager developed by Apple Inc. It supports MP3, AAC, WAV, AIFF, and Apple Lossless formats. You can use iTunes to download, play, and purchase media files on your personal computers running both Windows and Mac operating systems. Apart from playing or organizing your media files, iTunes can do more than you ever think, like to rip songs from CDs, and convert between different audio formats, eg. from MP3 to AAC.
Convert MP3 to AAC in iTunes on Windows
In order to make you have a better understanding on how to convert MP3 to AAC in iTunes, in the following, we simplify the whole process into two steps and offer you detailed instructions to them:
Step 1. To set AAC as the output encoder: Open iTunes on your Windows. Choose Edit > Preferences. In the pop-up General Preferences window, choose General tab > click the Import Settings button. In Import Settings box, choose AAC Encoder under Import Using > OK.
Step 2. To convert MP3 to AAC: Select one or more MP3 files in your iTunes library, then choose File > Convert > Create AAC Version.
After you've finished MP3 to AAC, where to find AAC files? Well, you can follow instructions below: open iTunes on Windows > click Edit in the top browser > move to Preferences > choose the Advanced tab under the Preferences box, where you can see your iTunes media folder location by default. Follow the directory path to open your AAC files.
Convert MP3 to AAC in iTunes on Mac
As announced by Apple on June 3, 2019, iTunes would no longer be available on future Mac computers. Instead, Apple has splitted iTunes functionality into several dedicated apps to manage your music, video, podcasts, and audiobooks. Starting with macOS Catalina, you can access your music library in the Apple Music app. Also, you can access your iTunes Store purchases in it. Here's how to convert MP3 to AAC using the Apple Music app:
Step 1. Open Apple Music on your Mac. Choose Music > Preferences. Click Files > Import Settings. In the Import Using menu, choose AAC Encoder > click OK.
Step 2. Select one or more MP3 files in your Apple Music library, then choose File > Convert > Create AAC Version.