10 Best Thin 4k Monitor 21 Inch of 2025

Tested and Reviewed: Top 10 Thin 4k Monitor 21 Inch deals with expert ratings from 8.1 to a perfect 10

June 2025 Edition

Editor's Choice

9.7

Save 35%

SAMSUNG

SAMSUNG 32" UJ59 Series 4K UHD (3840x2160) Computer Monitor, HDMI, Display Port, Eye Saver/Flicker Free Mode, FreeSync, LU32J590UQNXZA, Black

35% OffFree Shipping

Editor's bottom line:

“This thin 4k monitor 21 inch is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

WIDESCREEN UHD: With 4x the pixels of Full HD, get more screen space (vs 16:9 screen) and UHD images; View documents & webpages w/ less scrolling, work more comfortably w/ multiple windows & toolbars, and enjoy photos, videos & games in stunning 4K
A BILLION COLOR SHADES: Supporting a billion shades of color, the UJ59 delivers incredibly vivid and realistic images; Its color accuracy means colors appear true to life, making the UJ59 ideal for photo, video and graphics applications
SEAMLESS UPSCALING: Samsungs UHD upscaling technology includes signal analysis and detail enhancement that seamlessly upconverts SD, HD and Full HD content to near UHD-level picture quality
WIDESCREEN 4K GAMING: With 8.3 million pixels supporting a wide range of colors and resolving every image with astonishing clarity, UHD gives you a wider view for a truly thrilling and immersive gaming experience
SMOOTHER GAMEPLAY: AMD FreeSync synchronizes the refresh rate of your graphics card & monitor to reduce image tear & stutter; Low Input Lag Mode minimizes the delay between mouse, keyboard or joystick input and onscreen response for smooth gaming
GAME MODE: Game Mode instantly optimizes screen contrast to give you a competitive edge during gameplay; By selectively boosting contrast in scenes, Game Mode reveals more detail in dark areas to let you spot your enemies faster
POWERFUL MULTITASKING: Picture-by-Picture (PBP) lets you connect to 2 devices to the monitor and maintain their original quality; With Picture-in-Picture (PIP) you can resize the second source to up to 25% of the screen and position it anywhere
SLIM BEZELS: Framed by slim screen bezels and finished in stylish matte black, the UJ59 sits elegantly on virtually any desktop; And its Y-shaped stand provides a firm footing and a refined metallic touch

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Picked by 205 people today

9.5

Packard Bell

Packard Bell airFrame 21" FHD Monitor, 1920x1080, Ultrawide, VESA Mount Compatible, Tilt Adjustment, HDMI/VGA, Slim Bezel, for Home, Office, and Light Gaming

Free Shipping

Main Highlights

High-Quality Visuals - The Packard Bell airFrame 21 is equipped with a 1920 x 1080p resolution, this monitor delivers crisp and clear visuals that are great for both gaming and office use.
Fast Refresh Rate and Response Time - With a 75 hertz refresh rate and a 5 ms response time, the Packard Bell 21 Inch Monitor provides a smooth and seamless experience, making it perfect for gamers and anyone who needs a fast and responsive display.
VESA Mount Compatible The airFrame 21 is compatible with VESA mounts, which allows you to easily mount it on a wall or a monitor arm for a more ergonomic setup.
Adjustable Stand - The stand is adjustable, with a 5 degree forward tilt and a 15 degree backward tilt, making it easy to find the most comfortable viewing angle.
Wide Viewing Angle - The airFrame 21 has a 178 degree viewing angle, which ensures that the display looks great from almost any angle, making it perfect for students who need to share their screen with others. Plus, it's compatible with PC, Xbox, and PS5, making it a versatile option for any setup.

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9.5

CUNPU

CUNPU 27 Inch 4K Monitor, UHD (3840 * 2160) IPS Ultra-Slim Bezel Monitor for Photo Video Editing, ΔE < 2, 100% DCI-P3, 1.07B+ Colors, Height/Pivot/Tilt/Swivel, Built-in Dual Speaker, DP/HDMI

Free Shipping

Main Highlights

SUPERIOR 4K IMAGE QUALITY: The CUNPU 4K monitor boasts a 27-inch display with four times the pixel density of Full HD (8 million pixels), providing an enhanced visual experience. With 100% DCI-P3 color coverage, it offers a rich and vibrant color spectrum. The monitor displays up to 1.07 billion colors, with a brightness of 300 nits, a 1200:1 static contrast ratio, and a pixel pitch of 163 PPI. This ensures sharp and detailed images
COMFORT VIEW With ERGONOMIC DESIGN: The monitor's quick-release bracket allows for tool-free mounting to the base, simplifying the setup process. The stand provides a tilt range of -5 to 15°, a swivel range of -90 to 90°, and a height adjustment up to 5.11 inches, ensuring a comfortable viewing angle for extended gaming sessions. Its compatibility with 100 x 100 mm VESA mounts offers flexibility for wall, desk, or articulating arm setups.
SEE MORE CONTENT FROM EVERY ANGLE: This monitor has a 3-sided ultra-thin bezel and features an IPS panel with crystal clear color quality. The wide 178° viewing angle ensures that every user gets a great viewing experience from any angle, making it easy to share work or content.
INTEGRATED SPEAKERS With two built-in 2W speakers, you can easily listen to content while you work, study, and play-without the need for additional peripherals. Built-in speakers free up desk space by minimizing connections for a more efficient work environment
CONNECTS TO ALL GAME CONSOLES: The CUNPU 4K Gaming Monitor 27" supports multiple ports including 1* DisplayPort 1.4, 1* HDMI 2.0 and headphone jack. Interfaces that can easily work with Desktop Gaming PC, Laptops, Tablets, Mini PC, Switch, PS5, XBOX gaming console.

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9.2

Save 15%

MSI

MSI PRO MP273U, IPS 3840 x 2160 (UHD) Computer Monitor, 4K, 60 Hz, Adaptive-Synch, HDMI, DisplayPort, 4ms (GTG), Black

15% OffFree Shipping

Main Highlights

27-inch 4K UHD (3840 x 2160 / 16:9) designed for multi-taskers and designers
IPS panel with 178° Wide Viewing Angle designed for a premium quality picture
The wide color gamut of 95% Adobe RGB, 99% DCI-P3, and 139% sRGB brings the most excellent range of colors
MSI Eye-Q Check helps have self-check eyes & reminds to take a rest while using the monitor for a long time
HDR Ready Stunning visuals through contrast and shadow adjustment

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9.0

Save 14%

KTC

KTC 27 Inch 4K UHD(3840 * 2160) Computer Monitor - IPS Monitor, 60hz, HDR400, Anti-Blue Light Screen, DCI-P3 95% 125% sRGB, Support FreeSync and GSync, PC Monitor for Design, Work,Casual Gaming

14% OffFree Shipping

Main Highlights

[Stunning 4K Visuals] Immerse yourself deeply in stunning visuals with the KTC 27 Inch 4K Monitor, which boasts an impressive UHD resolution of 3840*2160 pixels. This high level of resolution delivers exceptional clarity and detail that greatly enhances your viewing experience, making it ideal not only for casual gaming but also for professional work and various design projects.
[Vibrant Colors & Accuracy] Experience a breathtaking array of vibrant colors and impressive image accuracy with innovative IPS Panel. This 27 inch monitor offers a wide 178° viewing angle and DCI-P3 95% 125% sRGB coverage, it is perfect for designers and creative professionals who seek precision in color representation and fidelity. Additionally, the HDR400 technology enhances your viewing experience by ensuring that you can see the actual black in dark scenes, providing deeper contrasts and improved details.
[Versatile Connectivity Options] This 4k computer monitor comes fully equipped with two HDMI 2.0 ports and one DisplayPort 1.4 connection, along with a convenient headphone jack. These connectivity options ensure that it is versatile enough to accommodate all of your devices, allowing you to easily switch between gaming consoles, PCs, PS5 and other multimedia devices without any hassle.
[Eye Safety Features] Take a proactive approach to prioritize your eye safety with the built-in Anti-Blue Light Screen feature. This innovative technology significantly reduces eye strain during extended periods of use, ensuring a more comfortable viewing experience whether you're gaming, working, or watching content.
[Edge-to-Edge Frameless Bezel Display] The frameless design reduces visual distractions, providing a wider view that enhances productivity and focus during work tasks. For users employing multiple monitors, the frameless design facilitates almost seamless multi-screen setups, creating an expansive workspace that is perfect for multitasking, data analysis, and professional presentations.

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8.8

Sceptre

Sceptre 4K IPS 27" 3840 x 2160 UHD Monitor up to 70Hz DisplayPort HDMI 99% sRGB Build-in Speakers, Black 2021 (U275W-UPT)

Free Shipping

Main Highlights

Superior 4K Picture: Delivering 4x the pixels (8 million) of FHD, 4K (3840 x 2160) resolution offers an extraordinary landscape of color variation, contrast, and clarity that mirrors the real world.Mounting Type: Wall Mount
Viewing Angle is 178° (H) / 178° (V); Aspect Ratio is 16:9
IPS Panel: The IPS (In-Plane Switching) panel cannot be beat when it comes to consistently delivering top color performance & sharp visibility from multiple viewing angles.
up to 70Hz Refresh Rate: With 75Hz refresh rate, images change faster and smoother than the standard, reducing screen tearing
350 Brightness: Detect impressively subtle & robust color variations with 350 cd/m² brightness.
Multiple Ports: The DisplayPort accelerates refresh rate up to 70Hz, providing the visual edge you need to defeat the competition during all of your gaming exploits. HDMI 1 delivers sharp 4K images at 60Hz while HDMI 2 and 3 deliver this remarkable resolution at 30Hz. Connect your favorite audio devices with Audio Out.

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8.6

Save 26%

Dell

Dell S2721QS Monitor 27 Inch, 4K UHD (3840 x 2160) IPS Display, Ultra-Thin Bezel, AMD FreeSync, HDMI, DisplayPort, VESA Certified - Silver

26% OffFree Shipping

Main Highlights

IMMERSIVE DISPLAY: Experience stunning 4K UHD with a three-sided ultrathin bezel design, providing immersive viewing with 4 times the resolution of Full HD. Supports HDR content playback for a lifelike visual experience.Specific uses for product - Gaming.Pixel Per Inch : 163. Brightness : 350 cd/m².Horizontal Viewing Angle : 178°. Vertical Viewing Angle : 178°
ELEGENT DESIGN: The back side of this monitor features a subtle textured pattern that gives it a unique look. It brings the feeling of a harmonious blend of great style and quality into every living space.
COMFORT VIEW: Customize your viewing experience with a height adjustable stand, tilt, swivel & pivot features, ensuring all-day comfort and ergonomic versatility.
SEAMLEASS SWITCHING: Built-in dual HDMI ports keep your devices always plugged in and let you effortlessly switch between streaming and console gaming.

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8.3

LG

LG 27US500-W Ultrafine Monitor 27-Inch 4K UHD (3840x2160) HDR10 IPS Borderless Design Reader Mode Flicker Safe Switch App HDMI DisplayPort - White

Main Highlights

4K UHD with 1000:1 Contrast Ratio - This UltraFine display with a 1000:1 contrast ratio displays deeper blacks and vivid colors in UHD clarity. With wide viewing angles, it gives creative professionals the ability to view and work with highly-detailed, digital imagery.
4K HDR10 DCI-P3 - Explore HDR10 content the way it was meant to be seen with up to 90% DCI-P3 color gamut expressionan elevated color spectrum that brings brilliant color to life.
Onscreen Control - You can customize the workspace by splitting the display or adjusting basic monitor options with just a few mouse clicks.
Ergonomic Stand - The ergonomic stand makes it easy to flexibly adjust the tilt of the screen in the optimal position for you.
What's In The Box - Stand Body, Stand Base, Screws, Power Adapter, HDMI Cable, Quick Start Guide, Registration Card, Warranty.

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8.1

Save 9%

LG

LG 27UP600-W 27-inch Ultrafine 4K UHD (3840x2160) IPS Computer Monitor, AMD FreeSync, VESA DisplayHDR 400, Reader Mode, Flicker Safe, HDMI, DisplayPort, White

9% OffFree Shipping

Main Highlights

Lifelike Realism with IPS and UHD Resolution - LG UltraFine 4K monitors feature great color, contrast, clarity and detail.
Enjoy HDR Games and Video - HDR elevates picture quality for a more dynamic visual immersion experience and enhanced color of HDR content for a true difference in color and brightness.
IPS with up to DCI-95% - This IPS monitor, with up to DCI-P3 95% coverage of the color spectrum, is a great solution for photographers, graphic designers or anyone looking for highly accurate color.
Vividly and Realistically - HDR content from multiple streaming services explores. And you can enjoy vivid brightness, and wide color range when playing on LG UHD 4K monitor with VESA DisplayHDR 400 technology in support of DCI-P3 color space.
Black Stabilizer - Your gameplay is never in the dark. Black Stabilizer is your ally to attack or defend against enemies hiding in the shadows. It delivers a pro-level gaming experience for enhanced vision and a jump on the competition.
Black Action Sync - Dynamic Action Sync elevates your gameplay for a pro-level experience. Respond to action, opponents and every moment with minimized input lag and unbelievable performance.

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8.1

Save 6%

LG

LG 27UP650K-W 27-inch Ultrafine 4K UHD (3840 x 2160) IPS Computer Monitor, 60Hz, 5ms, DisplayHDR 400, Reader Mode, Flicker Safe, HDMI, DisplayPort, Tilt/Height/Pivot Adjustable Stand, White

6% Off

Main Highlights

Stunning Image Quality in 4K Display - The 27-inch UHD 4K (3840 x 2160) IPS display reproduces clear images and vibrant colors with up to 95% DCI-P3 color gamut expression . Experience dramatic visual immersion with all your favorite shows, movies, sports and games.
4K UHD HDR - To more fully realize content creators vision, this monitor is compatible with VESA DisplayHDR 400 high dynamic range, supporting specific levels of color and brightness that exceed the capabilities of ordinary monitors.
Color Your World - Explore HDR content the way it was meant to be seen with up to 95% DCI-P3 color gamut expressionan elevated color spectrum that brings brilliant color to life.
Never In the Dark - Light up your gameplay with enhanced vision. Black Stabilizer brightens dark scenes to give you an advantage over the competitioneven when theyre hiding in the shadows.
Action As It Happens - Get a pro-level experience with the closest thing to real-time gaming. Dynamic Action Sync elevates your gameplay so you can respond every moment of the action with reduced input tag and unbelievable performance.
Easy and Comfortable - The ergonomic stand makes it easy to flexibly adjust the height, tilt, and pivot of the screen in the optimal position for you.

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Our Best Overall Choice

Best Choice

9.7

SAMSUNG

SAMSUNG 32" UJ59 Series 4K UHD (3840x2160) Computer Monitor, HDMI, Display Port, Eye Saver/Flicker Free Mode, FreeSync, LU32J590UQNXZA, Black

35% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

WIDESCREEN UHD: With 4x the pixels of Full HD, get more screen space (vs 16:9 screen) and UHD images; View documents & webpages w/ less scrolling, work more comfortably w/ multiple windows & toolbars, and enjoy photos, videos & games in stunning 4K
A BILLION COLOR SHADES: Supporting a billion shades of color, the UJ59 delivers incredibly vivid and realistic images; Its color accuracy means colors appear true to life, making the UJ59 ideal for photo, video and graphics applications
SEAMLESS UPSCALING: Samsungs UHD upscaling technology includes signal analysis and detail enhancement that seamlessly upconverts SD, HD and Full HD content to near UHD-level picture quality
WIDESCREEN 4K GAMING: With 8.3 million pixels supporting a wide range of colors and resolving every image with astonishing clarity, UHD gives you a wider view for a truly thrilling and immersive gaming experience
SMOOTHER GAMEPLAY: AMD FreeSync synchronizes the refresh rate of your graphics card & monitor to reduce image tear & stutter; Low Input Lag Mode minimizes the delay between mouse, keyboard or joystick input and onscreen response for smooth gaming
GAME MODE: Game Mode instantly optimizes screen contrast to give you a competitive edge during gameplay; By selectively boosting contrast in scenes, Game Mode reveals more detail in dark areas to let you spot your enemies faster
POWERFUL MULTITASKING: Picture-by-Picture (PBP) lets you connect to 2 devices to the monitor and maintain their original quality; With Picture-in-Picture (PIP) you can resize the second source to up to 25% of the screen and position it anywhere
SLIM BEZELS: Framed by slim screen bezels and finished in stylish matte black, the UJ59 sits elegantly on virtually any desktop; And its Y-shaped stand provides a firm footing and a refined metallic touch

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