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Best Video Converter to 4k Online Free

Have you ever watched a video that you wished to play on your phone but you couldn’t because it was not in the right format? The truth is, most videos aren’t optimized for all platforms. This means that if you try playing a video made for PCs on your mobile device, there are limitations to what you will be able to see and hear on the video. So if you want high-quality videos that you can play no matter where you are, then it is time to consider using the best 4k video converter online free.

We all have a great enthusiasm for watching movies. We used to watch movies on different formats of DVD and VCD. But now a days, there are lots of new video formats like DVD, Blue Ray, 4k video format and that is it hard to play some of the video formats on the devices which is not compatible with the new video format. So here I have listed a few free online 4k video converter that let you convert 4k videos to mp4, avi, mpeg etc. 4K Video Converter! You can easily make ultra high definition (4K/UHD), high definition (HD), Full HD, 1080p, 720p, 480p, and 240p videos all from the free online 4K / HD Video Converter.

Here, I will show you the best 4k video converter online that are free!

TalkHelper 4K Video Converter (Recommended)


TalkHelper 4K Video Converter is a potent and fully-fledged tool that allows you to convert to and from any 4K video format like MP4, MKV, AVI, MOV, WMV, and more. One of the best features is that any 4K clip can be tailored to specific devices including old feature phones with the help of built-in customizable preset profiles. 4K videos can be converted into 1080p, 720p, 480p, besides allowing you to turn other popular videos into 4K while retaining high-quality output. Also, you are open to a built-in 4K video downloader supporting YouTube, Vimeo, among others.


  • Supports batch 4K video conversion
  • Offers customizable conversion presets
  • Allows you to adjust the output quality
  • Allows you to tweak the various video parameters
  • Utilizes top-notch algorithms for lossless 4K conversion


  • Windows only

Supported Platforms: Windows

Best for: All-in-one 4K video upscaling and downscaling with the help of built-in presets, highly efficient codecs, batch processing, and more.

Download TalkHelper Video Converter

 WinX Video Converter


WinX Video Converter is a free video conversion tool that helps you to convert 4K video content to guarantee flawless playback on all PCs, TVs, and Mobile devices. Oversized 4K videos can be compressed diligently to facilitate faster uploading or sharing, not forgetting a built-in 4K/HD video downloader to grab online videos that don’t stutter during playback.

WinX Video Converter is a video converter which helps you convert all popular video formats like MP4, AVI, WMV, MKV, FLV, 3GP, VOB and more to any other video formats like MP4, AVI, WMV, MKV, FLV, 3GP and VOB. It also allows you to extract audio from your favorite DVD movies and save it as MP3 music or any other audio format.

The software features the ability to capture screenshots from the entire screen or just an active window. You can also crop the image by setting the exact size of your choice and add text captions and effects to make your screenshot more attractive.

When you are done with editing your screenshot/video clip you can share it on Facebook or Twitter directly from WinX Video Converter by clicking on the appropriate social network icon in the toolbar at the top of the window or by selecting “share” from File menu.

Even better, you can trim, crop, or merge just any video to suit your specific needs; for instance, you can turn HEVC/H.265 4K videos into H.264 codec to support almost any device.


  • Boasts a High Quality Engine
  • Up to 20X real-time 4K conversion speeds
  • Resize 4K videos up to 90% without quality loss
  • Built-in video downloader
  • Batch 4K video conversion
  • Offers video editing options


  • A limiting demo version

Supported Platforms: Windows

Best for: Free flawless 4K video conversion coupled with DVD/Blu-ray ripping, a video downloader, compressor, and editor.

Download winx video converter

Movavi Video Converter


With over 180 supported formats, Movavi Video Converter helps you to convert just any video into or from 4K, both online and offline, in excellent quality. You get a video compressor that helps to reduce the size of large 4K UHD videos into smaller sizes without quality loss.

Even better, Movavi features a built-in video editor tool with which you can crop, trim, merge, add effects, adjust colors, to suit your specific needs. This 4K video converter boasts a new AI quality scaling feature too that allows you to transform lower-resolution videos (480p, 720p, 1080p, etc) into 4K-level quality.


  • Allows you batch convert videos
  • Boasts AI-guided quality upscaling
  • Offers video editing and burning options
  • Compress 4K videos without quality loss
  • Convert any video format super-fast
  • Smart output presets


  • Watermarked videos on the free version

Supported Platforms: Windows, Mac, Web-based

Best for: Ultimate 4K video conversion featuring options to edit, compress, and upscale videos without quality loss.

Download movavi video converter

Acrok Video Converter Ultimate


Acrok Video Converter Ultimate is 10 times faster than similar 4K converters and besides converting native video formats, you also get to rip DVD and Blu-ray media content to any format. Whether you need to upscale to 4K or downscale from 4K, Acrok does so while keeping the quality intact.

To help refine the output even further, video editing features are at your disposal including options to trim, merge, split, crop, and add special effects. Amazingly, 8K/6K/4K/Full HD videos can be converted to any format, with optimizations for specific software and devices.


  • Fast, hardware-accelerated 4K video conversion
  • Powerful video editing options
  • Offers 2D and 3D video conversion
  • Lossless backup of 4K DVD/Blu-ray media
  • Batch processing with high-quality output
  • Built-in conversion presets


  • A bit constantly compared to counterparts

Supported Platforms: Windows, Mac

Best for: All-in-one DVD, Blu-ray, and 4K video conversion to almost any video format like MKV, AVI, WMV, MP4, MOV, FLV, etc.

Download Acrok Video Converter Ultimate



VideoProc from Digiarty utilizes full GPU acceleration for high-quality 4K conversion at very significant speeds while retaining the original quality. To be specific, VideoProc Converter allows you to convert, edit, resize and tweak large 4K videos, DVDs, and audio at 47X real-time faster, keeping a good balance between output size and quality.

Also, you get to denoise and stabilize any video footage for the highest quality on socials like stories for YouTube or Instagram. Amazingly, this tool allows for up to 90% video compression with little pixel-level quality discrepancies.


  • Offers options to upscale and downscale videos
  • Allows you to adjust the quality level
  • Offers simple video editing options
  • A dedicated 4K video editor Toolbox
  • Built-in downloader and screen recorder
  • Convert videos into audio e.g. MP3


  • 5-minute max conversions on the free version

Supported Platforms: Windows, Mac

Best for: Full GPU-accelerated 4K video conversion for an overly expedited process to convert, resize, edit, and tinker with 4K/HDR videos, DVDs, and audio.

Download videoproc

 FlexClip Online Video Converter


FlexClip is an online video converter that functions to flex your videos, including 4K, in terms of size or resolution. It is an avid MOV, M4V, WebM, and MP4 converter that takes you through only 3 conversion steps. Specifically, you get to tailor the output resolution ( 1080p, 720p, etc), format, and quality (Low, Medium, or High). Security for your files is also guaranteed considering that no video file falls in the hands of unauthorized parties. And the best of them all is that there is no quality loss.


  • 4K video conversion with no quality loss
  • Guaranteed file privacy and security
  • 100% free
  • Multiplatform
  • Simple and fast


  • No batch processing

Supported Platforms: Web-based

Best for: Free online video conversion with superior options to tweak the output video resolution or size with the ultimate convenience.

Download FlexClip

Free Online Video Converter


Free Online Video Converter supports over 500 file formats meaning that almost any video format can be converted. Even as an online tool, you are open to tinkering with various parameters like codecs, resolution, aspect ratio, framerate, besides options to rotate, flip, trim, and add subtitles. Fine-tuning these options help to realize the best quality in the 4K conversion process. Some of the supported codecs include VP9, H.264, H.265, among others. Also, you can choose to convert videos to audio formats like MP3 when the need arises.


  • Your files remain secure and private
  • Boasts output customization options
  • Offers batch 4K video conversion
  • Allows you to convert videos from direct URLs
  • Integrates Dropbox and Google Drive cloud services


  • 1GB max file size limit

Supported Platforms: Web-based

Best for: Converting large video files (including 4K) at lighting-fast speeds, online.

Download Free Online Video Converter


HandBrake is one of the most popular free open source video converter, which means you can use this video converter on Windows, Mac or even Linux to convert 4K video footage. HandBrake can reduce the video file size while keeping the original video quality. One of the best advantages of using HandBrake is that you can do a batch conversion with the built-in presets, which can save your time.

But if you have no idea about the video codecs, resolutions and formats, you may struggle with the software because you need to spend some time to figure out how to convert videos.

Learn more about HandBrake on its official website.

3.VLC media player

As the name indicates, VLC media player is used to playback media files, but it also can be used to convert video files. VLC Player is a free and open source multimedia player which runs on Windows, Linux, Mac OS X, and other platforms.

 Filmora Export

The new version VLC 3.0 is now supporting 4K video with HDR color and 8K video feeds, for the details about how to convert 4k video in VLC, you can check our article How to use VLC as a converter.

However, if you haven’t used VLC video player before, you may find it a little confusing at converting 4K videos because there is no Export or Convert button in the interface.

Check our review about VLC Media Player.

Acrok Video Converter Ultimate

This application provides you every type of conversion that you might need while working with 4k UHD video files. This program is very simple to use as you just have to load the video file into the converter, choose your desired output format, adjust the quality and frame rate settings and click on convert.

Acrok Video Converter Ultimate

Key features of Acrock Video Converter Ultimate:

  • It helps to convert 4k videos to AVI, MKV, WMV, MOV and other formats.
  • You can also convert the videos into 3D using this application program.
  • You can easily import and edit 4k videos into popular video editing software like Premiere, Avid, Final Cut Pro, and many others using the BlackMagic 4k video converter.
  • Files can be converted into MOV, MPG, AVI and other format very easily.
  • It allows user to add subtitles into video files and supports Apple ProRes, DNxHD and other professional encoding formats.

You can download this video converter on its official website >>

Pavtube Video Converter Ultimate

Pavtube Video Converter Ultimate is a powerful program that has multiple features like BDMagic, DVDAid, Video convertor and video editor. This all in one program also provides super-fast conversion speed for videos when converting 4K video to other resolutions.

Pavtube Video Converter Ultimate

Key features of Pavtube Video Converter Ultimate:

  • Like any other converting program, it can convert different file formats like AVI to WMV and so on.
  • Also, you can covert videos to YouTube friendly format which will allow faster upload of videos to YouTube.
  • As an editor, you can trim a video or crop it to suit your requirement.
  • Changing the brightness or adding subtitles is another key feature of this program.
  • In addition, you can have a backup of Blu-ray 3D movies to 3D/2D video files like MP4, AVI and others.
  • Pavtube Video Converter Ultimate also supports NVIDIA CUDA and ATI Stream acceleration technologies.

You can learn more about this 4K Video Converter at its official website >>


I bet there are times when you want to convert your video files from one format to another or want to change the video format according to your need but failed. Don’t be crazy of these operations since it is really a troublesome job. In order to solve this trouble, many people would like to use some free video converter online free for their help which can satisfy their needs best. However, most of them have been failed of this idea.

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