Converting .mp4 to .mp3 online is easy since there are a lot of online converters available over the internet. This article covers several online converters to convert MP4 to MP3 online for free with no limit on file size or conversion times. Read on for more details!

Tips: Here is a desktop converter to make conversions between video and audio with no size limit and no watermark:
Rocabella Rocabella | Updated on Feb 6, 2024

Online Converters to Convert MP4 to MP3 | Free & No Limit

1. video-converter-online (Unlimited file size)

Convert MP4 to MP3 Online with No Size Limit

This online video converter is easy to use. No need to sign up and no hidden charge. You can use it to fast convert MP4 to MP3, WAV, M4A, OGG, FLAC, OPUS, AAC, MMF, and M4R. It also supports a range of mainstream video formats. Besides, it enables you to do a batch conversion and import a video of any size up to several GBs. But note that, there are no options for customizing export settings.

2. (Unlimited file size)

MP4 to MP3 Online Converter with No Size Limit claims to offer real unlimited conversions: users can convert as many files as they want, with no size limits. Compared with most freemium online services, this online video converter is 100% free to use. Moreover, it comes with a straightforward conversion interface. Just follow its embedded Step instructions to convert MP4 to MP3 online for free, with no size limit. It also supports converting video, audio, or images.

Though there is a vast number of free converters online, most don't support unlimited conversions. The typical file size limit is around 50-100MB. If you just want an online service to process small-sized MP4 file to MP3 for free, you can try the following 2 utilities:

3. Online Audio Converter (Unlimited free conversions)

Convert MP4 to MP3 Online Free Unlimited Large Files

123APPS offers various tools for video, audio, and documentary files. Online Audio Converter is one of the services used for converting video/audio files to MP3, WAV, M4A, OGG, and more. Free users are allowed to process 70 files per day, which is more than enough for basic use. Moreover, there is no sign-up required. It’s accessible for everyone. Simply upload your MP4 video from your local drive, Google Drive, Dropbox, or from an URL link, select MP3 and then hit Convert. You are also provided with customization options of audio bitrate, sample rate, and channel. Only paid users can convert a unlimited number of videos per day.

4. Converter App (Unlimited free conversions)

MP4 to MP3 Converter Online Unlimited

Similar to 123APPS, Converter App is also a collection of free file converters. Not only can you convert video and audio files, but you also can convert PDFs and images. The usage of these converters is 100% free, no hidden charges, no sign-up required. Moreover, this free service tries not to limit the number of files users can submit or the file sizes. With Converter App, you can convert MP4 to MP3 online for free, and as many times as you want. The only drawback is that uploading large files takes much time. It also supports conversions between AVI to MP4, MP3 to WAV, and MP4 to WAV.

5. Restream (Unlimited free conversions)

Restream Convert MP4 to MP3 Unlimited

In simple clicks, you can convert WAV, M4A, MP4, MOV, MKV and more files to MP3 with Restream. This easy-to-use online converter enables you to upload a file of up to 1GB file size and has no limits on how many files you can convert. More importantly, there is no need to create an account. It will delete your files from its servers a few hours after you’ve downloaded them, so nobody has access to them.

These 5 online video converters are convenient solutions, especially if you need to convert an MP4 file to MP3 quickly. But if you ask for more than just format conversion, such as parameters adjustment or editing features, you can go with a free desktop MP4 to MP3 converter, for example, WonderFox Free HD Video Converter Factory.

Free Convert without Limit on Size & Format

WonderFox Free HD Video Converter Factory offers an easy and fast solution to convert all forms of video and audio files with high quality preserved, regardless of size & format & conversion times. It is safe, simple, and completely free for use.

Convert Large MP4 to MP3 Free & Unlimited on Windows

WonderFox Free HD Video Converter Factory is a powerful audio and video converter on Windows that can convert formats between virtually all types of video and audio. It is equipped with 500+ output profiles and allows you to free convert MP4 to MP3, WAV, AAC, WMA, OGG, FLAC, etc., with unlimited size & times.

Besides the basic conversion function, it comes with an array of editing tools. You can trim, cut, rotate, crop, and merge the MP4 files. You can also add watermark, filters, or subtitles to the MP4 video. And to further guarantee the quality of the conversion, the converter lets you adjust various settings including codec, bitrate, frame rate, etc.

Now, here is a simple guide on how to use the free converter. Free download the program and follow the steps below.

Free Download

Compatible with Windows

100% Clean & Safe

Free Download

Step 1. Launch the software and open the Converter. Next, drag and drop your large MP4 video file into the workspace.

Step 2. Click the right-side output format image icon to enter the format library. Go to Audio and select MP3 profile.

Step 3. Under the imported MP4 file profile, here you can hit the Trim (scissor-shaped) icon to trim the file.

You can also go to the Parameter settings. Here you can modify output parameters (e.g. bitrate, channels, sample rate, and volume) for the MP3 file. When you finish, hit OK to save the changes.

Step 4. Finally, hit the bottom triangle button to choose an output folder and click the Run button to start the process.

Free Unlimited MP4 to MP3 Converter


That’s all I want to share with you how to convert MP4 to MP3 free and unlimited online. I hope you find this article helpful. Thanks for reading.

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