by Brian Fisher • Feb 28,2020 • Proven solutions

If you are looking for a free MP3 to MP4 converter, and would like to know something about the top free online converters. The following few lines could be quite useful. The internet is literally flooded with dozens of such converters, and therefore choosing the right one could often be a tough task. However, based on various parameters, ease of use and other pros and cons the next few lines will be all about the 13 best converters to convert MP3 to MP4 free online and work on Mac/PC easily.

Top 13 Best and Free MP3 to MP4 Converters

How to Convert MP4 to MP3 Using Windows Media Player. Windows Media Player is the default player for Windows computer that supports a wide range of video and audio formats like.mp4,.mp3,.wma, etc. Top Free MP4 Converter Mac to Convert Video to MP4 No Quality Loss No Watermark Summary: MP4 is the widely used file format supported by almost all devices and media players. Check the detailed free MP4 converters for Mac review that will lead you to AVI/MKV/YouTube to MP4 converting and MP4 decoding for your purpose.

#1. UniConverter (Mac and Windows)

UniConverter is designed to help convert videos/audios from various formats to others. With it, you can easily convert MP3 to MP4 on macOS 10.15 or earlier (including Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion and Lion), Windows 10/8/7/XP/Vista, without any quality loss. By the way, if you are a Windows user, please go to get the Windows version.

Get the Best MP3 to MP4 Converter - UniConverter

It offers high conversion speed and zero quality loss.
Convert MP3 to MP4 video format or any other video or audio format with ease.
Customize and edit your audio or video before conversion.
Download online video/audio files from YouTube, Facebook, Vimeo, VEVO, Hulu and other more than 1,000 popular sites.
It is fully compatible with Windows 10/8/7/XP/Vista and macOS 10.7 or later.

How to Use the Best MP3 to MP4 Converter for Mac - 3 Easy Steps!

Before getting started, you can watch the video below to get a quick look over how to convert MP3 to MP4 format on Mac.

Step 1. Import MP3 file to the MP3 to MP4 converter

To add MP3 file to the program, you can go to the main menu and then choose 'Add Files'. Alternatively, you can directly drag and drop your MP3 file to the main interface.

Step 2. Select 'MP4' as the output format

To convert MP3 to MP4, you should select 'MP4' as the output format in this step. By the way, you can change the encode settings for your MP4 file if you want.

Step 3. Start MP3 to MP4 conversion

Select the output location for your MP4 file and then click the 'Convert' button to save converted MP4 file on PC/Mac.

Why not download the No.1 MP3 to MP4 converter software and try to convert MP3 to MP4 or other up to 150 formats on your own!

#2. Online Audio Converter & Video Converter

Well, if you are looking for MP3 to MP4 converter online, you can't miss this! Online Audio Converter & Video Converter is another amazing tool that can help you convert your MP3 files into MP4. This free online service not only converts MP3 into MP4 but into more than 1000 other formats. It’s a fast speed converter that produces the output file in a matter of a few minutes. You simply have to follow the following steps:
Step 1. Select the file from your system.
Step 2. After that select the file type you want to convert to from the drop-down menu (Video, video HD, or video SD).
Step 3. Lastly, select the format of the output file (MP4, MP4 HD or MP4 SD).

#3. Zamzar

Zamzar is a free online conversion tool that allows you to convert your favorite files to your required format without requiring you to download any software, like MP3 to MP4 online. Zamzar works with multiple operating systems like Linux, Windows, Mac, etc. You can choose a file from your system or by entering URL from a website. So how to convert MP3 to MP4? Follow the steps below!
Step 1. Feed your MP3 to the converter. You may simply drag and drop the file on the tool.
Step 2. Now choose MP4 as the format to convert to.
Step 3. Enter your email ID to receive the output file and hit 'Convert'.

#4. Freemake Video Converter

Freemake Video Converter is a versatile MP3 to MP4 converter free download. You can convert files to MP3, MP4, AVI, WMV, DVD, and for iPhone and Android devices. However, this is not an online converter. You need to download it. Once you download the converter, follow these steps to convert your files:
Step 1. Drag and drop your files or import your videos, audios, photos, and URLs through respective buttons.
Step 2. After adding your files, Choose MP4 from the various available formats.
Step 3. Click on “Convert” to save MP3 to MP4.

#5. Online Audio Converter

The company offers free online conversion facility which enables customers to convert mp3 to mp4 quite easily. Thousands of customers have been using it quite regularly and have been converting files of around 100 MB for free. Anything bigger than 100 MB will have to be registered and paid for.

Advantages:
It offers the best mp3 to mp4 conversions and additionally the service provider also offers conversion into a number of other formats too.
The speed of conversion is quite good.
Allows conversion of multiple files at a time.
Disadvantages:
Though it has extraction of sound from video feature when converting it to mp4 from mp3 often it does not work well.

#6. Online Convert

It has been around for many years now and has been faithfully serving the interests of thousands of customers. The free option is available only for file sizes that are within some prescribed limit. Further the trial version is available only for a certain period of time. Here are some obvious advantages and some shortcomings based on customers' experiences.

Advantages:
Speed of conversion is something that makes this converter so very popular. The file conversion is quite rapid.
It can help in multiple file conversions because of speed of conversion.
Quality of converted mp3 files is very good to say the least.
It offers a number of output formats including the much in demand mp4.
The company also offers an email support facility in case conversion is not happening properly.
Disadvantages:
The only disadvantage perhaps is the limit of file size when customers opt for free online conversion. Otherwise there is nothing much to complain for all those who are looking for a vanilla conversion.

#7. Switch

This is considered as one of the most sought after mp3 to mp4 converter free software that comes with trial version. It is very popular because of various reasons. Apart from being easily able to convert mp3 to mp4 there are some reasons why it is considered so very popular. Here are few advantages and disadvantages of this converter.

Advantages:
It has 17 output formats, which perhaps is much more that most of the converters available in the market for free.
It comes with a number of customization options.
Very user-friendly options.
Disadvantages:
Unlike some converters it does not have high speed conversion especially in the free version and hence conversion time could be a big issue.

#8. DBpoweramp

Being one of the free MP3 to MP4 converter, DBpoweramp is also considered to be a highly dependable and trustworthy converter which is also available for free conversion online, but strictly on trial basis. The trial is for a period of 21 days. It has 20 million users worldwide and effortlessly converts mp3 to mp4 formats even in the trial versions.

Advantages:
It allows the user to choose the exact bitrate as far as the output file is concerned. This feature is perhaps available only in this particular converter.
It also comes with DSP effects which are very useful as far as warble, fade, thin and Karaoke functions are concerned.
Disadvantages:
One of the biggest disadvantages is that it contains only 7 output formats compared to others which have double this number.

Free Mb4 To Mp3 Converter For Mac