You can download and convert longer playlists to MP3 format if you buy a license key, but the software's free features are very impressive. It lets you download up to 24 videos in a playlist, which is particularly useful for grabbing several songs by a particular artist. The free version of 4K Video Downloader does have its limitations, but we find that it suits most people just fine. Select 'Extract audio' and pick MP3, OGG or M4A, then click 'Extract' and the audio will be converted and saved to the destination of your choice. Copy the URL of a video from your web browser (it supports YouTube, Vimeo, Facebook, Flickr and DailyMotion) and click 'Paste URL'. It works in a similar way, too, but because this app is chiefly for downloading whole videos, there are a couple of extra steps involved. It might not be the most stylish software around, but like 4K YouTube to MP3 above, 4K Video Downloader is brilliant. We’ve tested quite a few of these free YouTube converters ourselves, so we found the ones that met our high standards and put together this list. If you have secured permission to do so, you have us to guide you in choosing the best and safest free YouTube to MP3 converter for your needs. Unauthorized downloads are against YouTube's terms of service, and TechRadar does not condone the use of these products for any copyright-infringing purposes.

Before using one, however, make sure that you have the creator or copyright holder’s permission to download their content.

Not to be confused with the best free music downloader apps, free YouTube to MP3 converters are somewhat similar to the best free YouTube downloader apps, except instead of downloading actual videos, they convert YouTube videos to MP3 and other formats. With one of these converters however, you'll be able to easily pull up those songs (and other types of content, for that matter) on your iPhone or Android device and listen to them while you’re on a flight, at the gym or driving across the country.

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