MP3 is the most popular format for music files. As all computers systems, portable music players, smartphones, car audio systems and DVD players support MP3 format, it is easy and convenient to store audio files in MP3 and transfer them to a variety of devices. The audio files on your disc are not compressed but when converted to MP3 format it will be compressed. Even so, MP3 files achieve a good compromise on file size and audio quality. If you have a lot of audio files that are saved in WAV, AIFF, MKA, M4A, AC3, AMR, AAC, FLAC, OGG, APE, etc., and would like to transfer to your Mac or iPod, you can convert these audio to MP3 using a number of audio converting software applications. This way, you can transfer them to different devices fast and easy. Here this article will show you two ways on how to convert audio to MP3 on Mac.

• Part 1. How to Convert Audio to MP3 on Mac
• Part 2. Top 5 Online Audio to MP3 Converter Free

Part 1. How to Convert Audio to MP3 on Mac

UniConverter can be a great conversion tool for converting audio files and even video files to MP3 on your Mac (macOS 10.7 Lion to 10.15 Catalina). Want to convert audios to MP3 on Windows 10/8/7/XP/Vista? Don't worry. You can get the Windows version to achieve that on your Windows computer with ease.

Step-by-step Guide to Convert Audio to MP3 with iSkysoft

Step 1. Add audio files to the audio to MP3 converter

Select your audio files from your computer and load them into the software window either by dragging and dropping. Alternatively, you can select the files from the dialog that opens by choosing "Add Files". You can choose single file or multiple files depending on how many music or audio files you need to convert to MP3 format. Note that if a video file is imported, you're actually extracting audio from a video file.

Step 2. Choose MP3 as the output format

Next, select the format to convert audio to. That's MP3 in this case. You can merge audio files using the "Merge" button. There are other settings you can access using the gear button. For example, the sample rate, bit rate, channel and codec. For higher MP3 audio quality, you're recommended to use higher sample rate and bit rate.

Step 3. Start converting audio to MP3 on Mac

Hit the "Convert" button at bottom. If you selected a number of files, then this process might take some time. If you need, you can set the computer to be shut down once the audio files are converted to MP3 format while you are free to do other things. By the way, if you want to convert WAV to MP3 or convert WMA to MP3, please check the links to learn more.

Part 2. Top 5 Online Audio to MP3 Converter Free

#1. Media iO

Media iO is a powerful convert which supports conversion of more than 150 audio/video formats. The tool supports more than 16 languages such as Malay, Italiano, English, Chinese, Dutch, etc. the converter is best known for its WAV, MP3, and 3GP conversions. It can convert any audio to MP3 within seconds. Besides, it enables users to download videos from YouTube and convert them quickly.

Pros:
It offers options to manage the audio quality such as Lower audio quality, average, high and extreme media quality.
It supports batch conversion of audio files.
The app is 80X faster than any online audio converter.
No waiting time for files to upload.
Cons:
It cannot work with poor network connections.
It consumes time when converting bulk audio files.

#2. Online Audio Converter

Online Audio Converter offers free online conversion of audios to MP3 and other file formats. It supports conversion of more than 300 video/audio formats, and unlike most online converters, it supports batch conversion of audios. The converter lets you upload files from Google Drive, Dropbox or your computer. Besides, you can copy and paste the audio’s URL and convert from the music site.

Pros:
It can convert more than 300 file formats.
It supports extraction of audios from videos.
It supports editing of track information.
Cons:
Ads accompany it.
It is slow when converting many files.

#3. Audio Converto

Audio Converto is a free web-based audio converter that supports formats such as MP4, OGG, M4R, FLAC, AAC, WMA, AC3, etc. while converting the files, you just need to browse and upload it and then choose MP3 as the output format. The converts also support volume adjustment of the MP3 file and file compression.

Pros:
It supports conversion of popular audio formats.
It helps compress file size.
You can paste multiple URLs.
Cons:
The Maximum supported file size is 100MB.

#4. FileZigZag

FileZigZag is one of the best online audio converters. It is compatible with all audio formats including FLAC, AIFF, AIFC, AIF, OPUS, AU, M4A, MMF, OGG, RA, WMA and many others. It is a free online converter that lets you choose the audio file that you wish to transform and setting MP3 as your output format. Once you convert the file, you can receive it via your email address.

Pros:
It is one of the fastest online converters.
It supports batch conversion of audio files.
It offers 10% web-based services.
The service is simple and very easy to use.
Cons:
File uploading consumes a lot of time.
Converted files cannot be downloaded directly since they will be sent via email.

#5. File Conversion

File Conversion is a simple audio to MP3 converter. It is compatible with audio formats such as MP3, AMR, MP2, AC3, ALAC, VOC, OGG, and ACC among others. The tool supports conversion of audios to MP3 within two simple clicks that takes few minutes.

Pros:
It supports 16 audio formats.
It takes only two steps to convert your file.
It supports ten languages.
Cons:
File conversion lacks additional features for modifying the audio file.