Here’s the ultimate comparison list of the best YouTube to MP3 converters that allow you to save YouTube videos in MP3. We included both online and desktop solutions to the review.

4K YouTube to MP3 – Our Choice

Price: Free, $15 for Personal, $45 for Pro licence (one-time fee).

4K YouTube to MP3 is a desktop solution to save videos, audio, channels, and playlists from YouTube and other sites in MP3, M4A, and OGG. The tool is compatible with Windows, macOS, and Linux desktop devices.

With 4K YouTube to MP3, you can download Watch Later, Liked videos, My Mix playlists, and private YouTube content in the original quality.

The software supports all popular websites. Apart from YouTube, you can save audio content from SoundCloud, Bilibili, Niconico, Vimeo, Instagram, Facebook, Flickr, Dailymotion, and Twitch in the same quality the content was shared on the platform. But don’t worry – you can adjust the quality of the audio to reduce the downloaded file’s size.

Additional features:

• YouTube Premium download.

• Built-in player.

• Easy proxy setup.

• Smart file organisation.

• Download speed control.

How to Convert YouTube to MP3 with 4K YouTube to MP3

1. Download and install the 4K YouTube to MP3 application. It's available for macOS, Windows and Linux.

2. Copy the video link from the browser.

3. Press the Paste Url button in the 4K YouTube to MP3 application.

4. After that, all you need is to wait until the download is completed.

5. You will find an MP3 file in the output directory. Just right click on the item and select Show in folder.

You can listen to audio tracks directly from the program interface thanks to an audio player embedded. Just click the Play button on the item logo or select Play in the popup menu.

By Click Downloader

Price: Free, $20 for Premium.

By Click Downloader is a desktop video downloader that allows you to save YouTube videos as MP3 and MP4 audio. Apart from YouTube, you can also download videos as audio from Facebook, Dailymotion, Vimeo, and more sites.

With By Click Downloader, you can save YouTube playlists and channels along with single videos. What’s more, the tool enables you to download several videos simultaneously in 720p, 1080p, 4K and 8K quality.

YTD Video Downloader & Converter

Price: Free, multiple paid options of the Pro plan – $10/mo, $3 per 2 years, or $6 for 2-year bundle.

This converter compatible with macOS and Windows devices allows you to easily download and convert videos from YouTube, Facebook, Dailymotion, Vimeo, and many more sites. The content you save can be converted in multiple formats, such as .mp4, .mov, .wmv, .avi, .mp3, .3gp.

The tool allows you to save entire playlists from YouTube in the original quality, including 8K.

YTop1

Price: Entirely free

YTop1 is an online solution to convert YouTube to MP3, which is completely free. The tool allows you to download YouTube videos and convert them into MP3 files with no third-party applications installed on your PC and no registration required.

What else YTop1 can do is convert super long YouTube videos to MP3, save videos in MP3 and MP4 formats hassle-free in 720p, 1080p, 4K and 8K quality. Besides, it has no ads and is localised in multiple languages.

iTubeGo

Price: Free. $29.95 lifetime / 1PC for Lifetime Plan, $9.95 1 month/1 PC for 1-month plan, $19.95 1 Year/1 PC for one-year plan, $39.95 lifetime/2-5 PCs for Family Plan.

Yet another desktop tool to convert YouTube videos in various formats, including MP3, WAV, AAC, and more. The tool also allows you to protect the downloaded content files folder with password due to its private video mode.

iTubeGo has a built-in browser and a simple editor to cut audio in-app, allows for bulk-downloading of videos and playlists, supports downloading of 4K and 8K videos.

YTMP3

Price: Free

YTMP3 is one of the simplest online tools to convert YouTube to MP3. All you have to do is to paste a link with the video and choose the MP3 format. Alternatively, you can type keywords in the search field. Then you just click the Convert button. You don’t need to register to download a converted file or install any software on your computer.

You can convert and download as many videos as you like with no limits.

BigConverter

Price: Free

BigConverter is an online solution that converts YouTube videos to various audio and video formats, including MP3 in high quality. It supports other sites beyond YouTube; among them are Facebook, Twitter, Vimeo, Instagram, Dailymotion, Google Drive, etc. The solution comes with features like cross-platform support, cloud support, file editor, and support for YouTube supported portals.

The converter’s functionality is pretty much similar to other online converters of this kind: you just copy the video’s URL and paste it into the link field. The only drawback of this tool is the restriction that the video can't be longer than 90 minutes.

Best YouTube to MP3 Converter: Bottom Line

There are many more solutions on the market that allow you to convert YouTube videos to MP3 at the touch of a button. And this list is not exhaustive. We just highlighted the ones that are the most popular, feature-rich solutions that are easy to use. We recommend you should try 4K YouTube to MP3 by 4K Download if you often need to convert multiple videos. If you’re looking for a one-time solution, you can use one of the online tools.