YouTube 4K Converter and Downloader
  • Download then convert YouTube 4k videos to the format you want
  • Download then convert videos to the format you want from 1000+ websites
  • Convert 4K file to more than 1000 formats, and vice versa
  • Support both Windows and Mac system

YouTube moments are worth capturing. Everyone loves to capture his or her favorite YouTube moments. YouTube has rigid settings and rules, it is almost impossible to download the videos except in the application itself. Although there are certain tools available that will let you convert your 4K videos from YouTube, all these tools will convert both audio and video in low settings.

However, there is nothing to worry about. In this article, we will talk about the best YouTube 4k video converters and downloaders that can help you to convert your videos in high resolution.

Part 1. The Best YouTube 4k Converter and downloaders 2021

It is indeed very tough to find a prominent software that can download and convert YouTube 4K videos in seconds and without any hassle. Fortunately, we have Aicoosoft video Converter. It has very high ratings from its customers and is regarded as the best 4K YouTube video converter and downloader. You can download it from Mac and Windows operating systems. With this software, you can download 4K videos from YouTube and convert them to MP4/MOV videos in seconds.

Key features of Aicoosoft Video Converter

Let us have a look at some of the key features of this amazing tool:
  • It has a powerful video downloader using which you can download the 4K videos from YouTube or any other streaming site easily.
  • It uses AI technology due to which conversion speed is very fast and there is no compromise in the quality of the output video too.
  • The powerful video downloader of Aicoosoft enables its users to download videos from more than 1000 video sharing sites.
  • It can convert 4K and HD videos into any format for playback. In addition, you can convert videos for any device like smartphones too.
  • It uses lossless conversion technology and GPU acceleration due to which the conversion speed is very high and there is no loss in the output quality too.
  • Aicoosoft can convert video files into more than 1000 formats.
  • Besides being an extremely good converter, it is an efficient video editor too. You can cut, trim and merge videos using it.
  • It is also a professional video compressor. You can compress HD videos using it without any loss in the quality.
  • It supports Windows and Mac OS.

How to download and convert YouTube 4K videos using Aicoosoft Video Converter

First of all, go on the URL and download the Aicoosoft software from there.


After installing, you can launch it and click on the “Download” tab. Then turn on “Download then Convert” at the upper right side corner. Select the “Video” tab on the pop-up window and then in the list of the output format choose the format you like.


Now, you need to visit YouTube and copy the 4K video URL which you want to download. Then, hit “Add Url” option at the main interface of download tab and then paste the copied video URL in box. The software will automatically analyze the video and start downloading.


After finishing the download, the software will convert YouTube 4k video to the selected format automatically. Once conversion is finished it will show you a pop-up box. Click on the “Open Folder”, you will be in the folder where the converted file is saved. 

Part 2. Top 5 online YouTube 4K Converters and Downloaders 2021

1 - Convert2MP3


It is a free tool where you can perform unlimited conversions without any registration. It is a great way to convert 4K YouTube videos and what is amazing is that it is very easy to use. Besides being a free converter, it also enables us to download videos from YouTube, Facebook, and that too completely free. You can download 4K videos from this tool in a very short time. It supports the popular video and audio formats available in the market. The software is safe to use and there is no threat of viruses or malware while using it.

  • It does not require registration.
  • It is free and safe and quite easy to use.
  • It supports high-speed download and high-quality conversion.
  • No additional settings

2 - Online Video Converter


This is one of the most used programs that allow you to download the videos from YouTube and you can convert those videos to any format. Besides YouTube, you can download the videos from almost all the popular video sharing sites. Online Video converter is compatible with all the modern browsers and there is no need to install it to your system. You can perform unlimited conversions and that too absolutely free. It has a very easy-to-use interface and you can download and convert videos to various other formats like FLV, MP4, MP3, MOV, Ogg, etc. All you have to do is to copy the link of the YouTube video here and then choose the output format. The downloader will download the video and the converter will convert it to the selected format.

  • It is a free 4k to MP4 converter
  • It supports all the popular video formats
  • It is also mobile compatible
  • Conversion time is not so fast
  • It does not include customs settings

3 - Converto


Converto is a decent program using which you can convert your You Tube videos to MP4 and MP3 formats. You can use the tool via your browser and there is no need to install the software. It does not require registration also. The process of conversion is really simple and it allows conversion in HD resolution. You can choose the quality of the output file while conversion. It allows both video and audio downloads supported by YouTube. It also has an option to cut the videos and choose the output quality while doing it.

  • Completely Free
  • Has an appealing design
  • No need to download the program
  • Does not have extra features
  • Needs a strong internet connection
  • Supports only MP4 and MP3 format

4 - Video Converter MP4


Videos from popular sites like YouTube can be downloaded from this extremely popular site in HD quality. It is a free online converter and the videos converted can be saved on tablets, phones for offline viewing. All you have to do is to paste the video link, and then it can be downloaded and converted into the required format depending on your requirements. You can download and convert unlimited videos using this tool. It performs super-fast conversions and the software is pretty simple to use too. Besides YouTube, you can download videos from Twitter, Vimeo and DailyMotion also.

  • Supports download from multiple sites
  • Its conversion speed is fast most of the time
  • No additional settings
  • Sometimes slow
  • Ads on the page

5 - YouTubeMp4


It is a simple solution for converting your YouTube 4k videos. It has a clean format using which you can convert your YouTube 4k videos into MP4 and WEBM format. It is a quick and straightforward tool. You just have to paste the link of the video and then choose the quality, size and format of the file. The video is converted and then you can download it.

  • Very simple and minimalistic
  • Reliable and fast
  • No additional settings
  • Only support a few formats


With the availability of video conversion tools online one can easily download and convert YouTube 4k videos to the format as per the compatibility of your device. But all the online coversion tools can not work perfectly. On the other hand, Aicoosoft video converter is professional. It is the best application that allows easy conversion of videos from one form to another. Beside the function of high-quality conversion, it has many additional settings and functions. 

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