Upscale 2K to 4K with Best Quality on Windows (10/11) or Mac
No matter why you need to upscale 2K to 4K, here's best solution. Unlike most 2K to 4K upscaling solutions which output a 4K video with bad image quality, this solution can do a more perfect job, meanwhile, deliver the fastest conversion speed in converting 2K to 4K.
Best 2K to 4K Converter for Windows (10) and Mac - WinX HD Video Converter Deluxe
- Upscale 2K to 4K UHD resolution with best quality at ultrafast speed. 4K MP4 profile with best built-in config is available.
- Convert any 8K/4K/2K/HD 1080p/720p video, incl. MKV, HEVC, M2TS, AVCHD, MOD, and MP4, AVI, MPEG, H264, MOV, VOB, etc.
- Advanced settings to allow you to freely adjust video resolution, frame rate, bit rate, aspect ratio, etc.
- Edit, trim, crop, expand video. Add external SRT subtitles to video.
- Support hardware acceleration based on Intel QSV, Nvidia NVENC/CUDA, and AMD. Speed up 4K conversion to the utmost.
Part 1. 2K vs 4K Resolution
2K: 2K resolution refers to display devices or videos having horizontal resolution of approximately 2,000 pixels. In the movie projection industry, Digital Cinema Initiatives (DCI) defines 2K resolution standard as 2048×1080.
4K: 4K resolution refers to a horizontal screen display resolution of 4,000 pixels. In television and consumer media, 4K UHD or UHD-1 (2160p, 3840 × 2160 pixels) is the dominant 4K standard. In the movie projection industry, Digital Cinema Initiatives (DCI 4K, 4096 × 2160 pixels) is the dominant 4K standard. The DCI 4K standard has twice the horizontal and twice the vertical resolution of DCI 2K.
Related post: Difference among 1080p, 4K and 8K
Part 2. Which Program Can Upscale 2K to 4K with High Quality?
Many 4K TVs adopt 4K UHD (3840 × 2160). If you'd like to play 2K video on a 4K TV with best visual quality, you can use a top 2K to 4K converter to upscale 2K resolution video to 4K resolution.
WinX HD Video Converter Deluxe, as the best solution to convert 2K to 4K UHD, provides two output 4K formats, 4K MP4 and 4K MKV, with best preset 4K video configurations. You can just put your original 2K video and upscale it to 4K UHD in a few clicks while keeping best output quality. The conversion speed is superfast owning to its support for Intel QSV, Nvidia CUDA/NVENC hardware acceleration, Hyper-threading, and Multi-core CPU tech.
Related post: Best 4K video converters
Part 3. How to Convert 2K to 4K with Best Output Quality on Windows (10) or Mac
Free download and install WinX HD Video Converter Deluxe on Windows 10 or lower or free download its Mac version on macOS Ventura or lower. And follow the 3 simple steps below to upscale 2K to 4K with ease.
Step 1. Import Source 2K Video
Launch WinX HD Video Converter Deluxe and click "+Video" button to select and load the original 2K video from computer to the program.
Step 2. Choose 4K MP4 as Output
In the Output Profile window, click General Profiles -> 4K MP4 Video.
If you'd like to output best quality, you can slide to HQ quality or click "High Quality Engine" on the main interface.
Then tick hardware accelerated encoder Intel or Nvidia (If your computer supports) to maximize the video conversion speed.
Step 3. Upscale 2K to 4K UHD
Optionally click "Browse" to specify a destination folder to save the output 4K video. Hit "RUN" to start converting 2K to 4K UHD for later playback on 4K TVs, etc.
Related: Find more video resolution changers to fit your 4k upscaling needs.

Related External Source:
4K resolution: 4K resolution, also called 4K, refers to a horizontal screen display resolution in the order of 4,000 pixels...
2K resolution: 2K resolution is a generic term for display devices or content having horizontal resolution of approximately 2,000 pixels. Digital Cinema Initiatives (DCI) defines 2K resolution standard as 2048×1080...