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Best Buy customers often prefer the following products when searching for 21 inch monitor.

The monitor is the centerpiece of your computer system. It's the screen that displays all your work, play, and communication. The best monitors provide a wide range of features and capabilities, from high resolution for high-end gaming to fast refresh rates for competitive gaming. Browse the top-ranked list of 21 inch monitors below along with associated reviews and opinions.

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  1. HP - 21.5" IPS LED Full HD FreeSync Monitor (HDMI, VGA) - Silver & Black - Front_Zoom
    Top comment

    "Excellent 21 inch...HD monitor...Good 21 inch monitor. The picture quality is excellent."

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    Product Description

    The New Definition of High Definition: This FHD monitor feels as good as it looks, packing IPS technology for 178 degrees ultra-wide viewing angles, 99% sRGB color gamut for color accuracy, and FreeSync to keep your eyes up to speed with your imagination. Looks Good, Feels Good, Does Good: Increase viewing comfort with HP Eye Ease with Eyesafe certified technology that doesn't sacrifice color quality. Monitor designed with sustainability in mind with 85% postconsumer recycled plastics and packaged in recycled materials. Doing good never looked so good. Streamlined & Seamless: Streamline your setup with its slim profile, innovative cable containment, and seamless design for side-by-side screens.
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    Top comment

    "Excellent 21 inch...HD monitor...Good 21 inch monitor. The picture quality is excellent."

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    Product Description

    The New Definition of High Definition: This FHD monitor feels as good as it looks, packing IPS technology for 178 degrees ultra-wide viewing angles, 99% sRGB color gamut for color accuracy, and FreeSync to keep your eyes up to speed with your imagination. Looks Good, Feels Good, Does Good: Increase viewing comfort with HP Eye Ease with Eyesafe certified technology that doesn't sacrifice color quality. Monitor designed with sustainability in mind with 85% postconsumer recycled plastics and packaged in recycled materials. Doing good never looked so good. Streamlined & Seamless: Streamline your setup with its slim profile, innovative cable containment, and seamless design for side-by-side screens.
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    See all All Monitors
  2. ViewSonic - 21.5" LED FHD Touch-Screen Monitor (DVI, VGA) - Black - Front_Zoom
    Top comment

    "Monitor...The monitor works as advertised - I wanted a touch screen monitor that had a speaker installed and it has that....This monitor has many great features of monitors that are double its price and has a 3 year warranty versus the 1 year warranty that most monitors have. "

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    Product Description

    Zoom in or out on this ViewSonic multi-touch monitor with incredibly clear results. The 22-inch screen is ideal for most work setups or gaming stations, and full HD graphics place you right in the middle of what you're doing. Compatible with Windows 7 and higher, this ViewSonic multi-touch monitor features dual integrated speakers for a fully immersive experience.
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    Top comment

    "Monitor...The monitor works as advertised - I wanted a touch screen monitor that had a speaker installed and it has that....This monitor has many great features of monitors that are double its price and has a 3 year warranty versus the 1 year warranty that most monitors have. "

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    Product Description

    Zoom in or out on this ViewSonic multi-touch monitor with incredibly clear results. The 22-inch screen is ideal for most work setups or gaming stations, and full HD graphics place you right in the middle of what you're doing. Compatible with Windows 7 and higher, this ViewSonic multi-touch monitor features dual integrated speakers for a fully immersive experience.
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    See all All Monitors
  3. Lenovo - ThinkVision T22v-20 21.5" VoIP LED Monitor (HDMI, DP, VGA) - Black - Front_Zoom
    Top comment

    "Practical Monitor with a Great Picture...The ThinkVision T22v-20 21.5-inch FHD VoIP Monitor has a great picture and is very practical to use. ...ThinkVision T22v-20 21.5-inch FHD VoIP Monitor"

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    Product Description

    Collaborate and hold meetings and video conferencing with the 21.5-inch ThinkVision T22v-20 that has a built-in camera, microphone, and speakers. With an integrated IR camera and Windows Hello, you can safely log in without a password.
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    Top comment

    "Practical Monitor with a Great Picture...The ThinkVision T22v-20 21.5-inch FHD VoIP Monitor has a great picture and is very practical to use. ...ThinkVision T22v-20 21.5-inch FHD VoIP Monitor"

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    Product Description

    Collaborate and hold meetings and video conferencing with the 21.5-inch ThinkVision T22v-20 that has a built-in camera, microphone, and speakers. With an integrated IR camera and Windows Hello, you can safely log in without a password.
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    See all All Monitors
  4. Acer - AOPEN 34HC5CUR Pbiiphx 34” LED UWQHD Curved FreeSync Monitor (DisplayPort, HDMI) - Black - Angle_Zoom
    Top comment

    "Great monitor for gaming and productivity...Excellent monitor. Let me preface this by saying I am only medium level picky when it comes to displays. ...Its my first curved monitor 34 inch and i really like it so far it has a very nice wide view the picture looks very nice you can move the monitor up or down and side to side very satisfied over all gave it a 5 because of how much i liked it"

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    Product Description

    AOPEN's 34-inch curved panel monitor with UWQHD resolution delivers the incredible. Crisp, true-to-life colors come alive with the amazing 3440 x 1440 resolution, allowing you to enjoy High-Definition entertainment in the comfort of your home. The wide view angle technology lets you share what’s on your screen with friends and family as colors stay true no matter what angle you’re viewing from.Through AMD FreeSync Premium technology, the game’s frame rate is determined by your graphics card, not the fixed refresh rate of the monitor, giving you a serious competitive edge. Smooth, tear-free gameplay!! And a whole lot more.
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    Top comment

    "Great monitor for gaming and productivity...Excellent monitor. Let me preface this by saying I am only medium level picky when it comes to displays. ...Its my first curved monitor 34 inch and i really like it so far it has a very nice wide view the picture looks very nice you can move the monitor up or down and side to side very satisfied over all gave it a 5 because of how much i liked it"

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    Product Description

    AOPEN's 34-inch curved panel monitor with UWQHD resolution delivers the incredible. Crisp, true-to-life colors come alive with the amazing 3440 x 1440 resolution, allowing you to enjoy High-Definition entertainment in the comfort of your home. The wide view angle technology lets you share what’s on your screen with friends and family as colors stay true no matter what angle you’re viewing from.Through AMD FreeSync Premium technology, the game’s frame rate is determined by your graphics card, not the fixed refresh rate of the monitor, giving you a serious competitive edge. Smooth, tear-free gameplay!! And a whole lot more.
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    See all Gaming Monitors
  5. LG UltraGear 45" OLED Curved WQHD 240Hz 0.03ms FreeSync and NVIDIA G-SYNC Compatible Gaming Monitor with HDR400 - Black - Front_Zoom
    Top comment

    "Great Gaming Monitor...This is one of the best monitors for gaming/immersion. Hands down would but it again. ...AMAZING MONITOR…...So i exchange it for the 27 inch OLED non curvee flat 2024 version ."

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    Product Description

    Experience stunning performance with the huge 45” curved WQHD LG UltraGear OLED gaming monitor. How huge is this UltraGear? The 45" with a 21:9 aspect ratio has more screen area than a 49" gaming monitor with a 32:9 aspect ratio- more screen for a more captivating experience. The OLED screen is certified VESA DisplayHDR True Black 400 which enables gamers to experience HDR in games as developers intended. The screen displays stunning, rich black levels and bright, deep color contrast for the on-screen visuals gamers crave. Stay a step ahead of the competition with an ultra-fast refresh rate up to 240Hz and .03ms response time that will bring you into the game like never before¹. And with the steep and dramatic 800R curve, you’ll feel enveloped in the action. This UltraGear's built-in speakers and multiple connectivity options including USB Type-C make this UltraGear, the ultra-essential screen for your battlestation setup.
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    Top comment

    "Great Gaming Monitor...This is one of the best monitors for gaming/immersion. Hands down would but it again. ...AMAZING MONITOR…...So i exchange it for the 27 inch OLED non curvee flat 2024 version ."

    See all customer reviews

    Product Description

    Experience stunning performance with the huge 45” curved WQHD LG UltraGear OLED gaming monitor. How huge is this UltraGear? The 45" with a 21:9 aspect ratio has more screen area than a 49" gaming monitor with a 32:9 aspect ratio- more screen for a more captivating experience. The OLED screen is certified VESA DisplayHDR True Black 400 which enables gamers to experience HDR in games as developers intended. The screen displays stunning, rich black levels and bright, deep color contrast for the on-screen visuals gamers crave. Stay a step ahead of the competition with an ultra-fast refresh rate up to 240Hz and .03ms response time that will bring you into the game like never before¹. And with the steep and dramatic 800R curve, you’ll feel enveloped in the action. This UltraGear's built-in speakers and multiple connectivity options including USB Type-C make this UltraGear, the ultra-essential screen for your battlestation setup.
    See all Gaming Monitors
    See all Gaming Monitors
  6. MSI - MAG321UPXQDOLED 32" Quantum Dot OLED UHD 240Hz 0.03ms FreeSyncPremium Monitor with HDR400 (DisplayPort, HDMI, USB-C) - Black - Front_Zoom
    Top comment

    "You cannot go wrong with this monitor as it is the cheapest of the new 4k qd-oled monitors....I was able to set up a 3840x1600 ultrawide resolutions as well as the custom 27inch and 24 inch that the asus oled feature has giving me the aspect control mode for a 1300 monitor but at $850. "

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    Product Description

    Visualize your victory with the MAG 321UPX QD-OLED gaming monitor. It boasts a 3840x2160 (UHD) next-gen QD-OLED panel, 240Hz refresh rate, and rapid 0.03ms(GtG) response time. VESA certification for ClearMR 13000 and DisplayHDR True Black 400 ensures exceptionally vivid images and mitigates motion blur. OLED Care 2.0 reduces OLED burn-in risks. For console gamers, the MAG 321UPX QD-OLED provide HDMI 2.1 ports with 48Gbps bandwidth, 120Hz support, VRR, and ALLM.
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    Top comment

    "You cannot go wrong with this monitor as it is the cheapest of the new 4k qd-oled monitors....I was able to set up a 3840x1600 ultrawide resolutions as well as the custom 27inch and 24 inch that the asus oled feature has giving me the aspect control mode for a 1300 monitor but at $850. "

    See all customer reviews

    Product Description

    Visualize your victory with the MAG 321UPX QD-OLED gaming monitor. It boasts a 3840x2160 (UHD) next-gen QD-OLED panel, 240Hz refresh rate, and rapid 0.03ms(GtG) response time. VESA certification for ClearMR 13000 and DisplayHDR True Black 400 ensures exceptionally vivid images and mitigates motion blur. OLED Care 2.0 reduces OLED burn-in risks. For console gamers, the MAG 321UPX QD-OLED provide HDMI 2.1 ports with 48Gbps bandwidth, 120Hz support, VRR, and ALLM.
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    See all Gaming Monitors
  7. Acer - Nitro XF273U 27" IPS LCD 240Hz  FreeSync Monitor (HDMI, DP) - Black - Front_Zoom
    Top comment

    "Great monitor...Compatible with my KVM where LG monitors were not....Gaming monitors...High quality gaming monitor, high speed, easy access and high performance graphics with high resolution"

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    Product Description

    In competitive gaming, every frame matters. Introducing Acer's XF273U gaming monitor - the WQHD (2560 x 1440) resolution monitor that can keep up with your game play. Through AMD FreeSync Premium technology, the game’s frame rate is determined by your graphics card, not the fixed refresh rate of the monitor, giving you a serious competitive edge. Plus, users can enjoy comfortable viewing experience while gaming via flicker-less, low dimming and ComfyView display. The design saves space on your desk and lets you place multiple monitors side by side to build a seamless big-screen display.
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    Top comment

    "Great monitor...Compatible with my KVM where LG monitors were not....Gaming monitors...High quality gaming monitor, high speed, easy access and high performance graphics with high resolution"

    See all customer reviews

    Product Description

    In competitive gaming, every frame matters. Introducing Acer's XF273U gaming monitor - the WQHD (2560 x 1440) resolution monitor that can keep up with your game play. Through AMD FreeSync Premium technology, the game’s frame rate is determined by your graphics card, not the fixed refresh rate of the monitor, giving you a serious competitive edge. Plus, users can enjoy comfortable viewing experience while gaming via flicker-less, low dimming and ComfyView display. The design saves space on your desk and lets you place multiple monitors side by side to build a seamless big-screen display.
    See all Gaming Monitors
    See all Gaming Monitors
  8. MSI - MPG 491CQP QD-OLED 49" 5120x1440 (DQHD) Curved OLED Quantum Dot Monitor 144Hz 0.03ms(GTG) HDR400 Type-C DisplayPort HDMI - Black - Front_Zoom
    Top comment

    "Really Wide monitor with amazing colors!...You can see just how big this monitor is when you compare it to the 34" 21:9 that I have mounted above....Not going back to regular monitors...Price: Despite its top-notch performance and features, the MSI MPG 491CQP comes in at a more affordable price point compared to similar monitors. It's a great bang for your buck. Overall Impression: I'm thoroughly impressed with the MSI MPG 491CQP monitor. "

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    Product Description

    Visualize your victory with the MPG 491CQP QD-OLED gaming monitor. It boasts a 5120x1440 (DQHD) 1800R curved next-gen QD-OLED panel, 144Hz refresh rate, and rapid 0.03ms(GtG) response time. VESA certification for ClearMR 7000 and DisplayHDR True Black 400 ensures exceptionally vivid images and mitigates motion blur. OLED Care 2.0 reduces OLED burn-in risks. For console gamers, the MPG 491CQP QD-OLED provide HDMI 2.1 ports with 48Gbps bandwidth, 120Hz support, VRR, and ALLM.
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    Top comment

    "Really Wide monitor with amazing colors!...You can see just how big this monitor is when you compare it to the 34" 21:9 that I have mounted above....Not going back to regular monitors...Price: Despite its top-notch performance and features, the MSI MPG 491CQP comes in at a more affordable price point compared to similar monitors. It's a great bang for your buck. Overall Impression: I'm thoroughly impressed with the MSI MPG 491CQP monitor. "

    See all customer reviews

    Product Description

    Visualize your victory with the MPG 491CQP QD-OLED gaming monitor. It boasts a 5120x1440 (DQHD) 1800R curved next-gen QD-OLED panel, 144Hz refresh rate, and rapid 0.03ms(GtG) response time. VESA certification for ClearMR 7000 and DisplayHDR True Black 400 ensures exceptionally vivid images and mitigates motion blur. OLED Care 2.0 reduces OLED burn-in risks. For console gamers, the MPG 491CQP QD-OLED provide HDMI 2.1 ports with 48Gbps bandwidth, 120Hz support, VRR, and ALLM.
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    See all Gaming Monitors
  9. LG - UltraGear 45” Curved QHD 200Hz 1-ms FreeSync Premium Gaming Monitor with HDR (Display Port, HDMI, USB Type-C) - Black - Front_Zoom
    Top comment

    "The only downside I have really come across is the fact that it has about an inch less screen height wise. My old 21:9 Ultrawide monitor had a screen height of 14.29". ...Three screens are perfectly fit in in this 19 lbs curved monitor. It doesnt weight and uses much less energy than OLED monitors. "

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    Product Description

    Bolster your battlestation! Featuring a huge 45” QHD (5120 x 1440) curved screen at a 32:9 aspect ratio, the vast display envelops gamers in play, streaming, work and creative products all on one monitor at the same time. With gaming-focused features such as up to a 200Hz refresh rate, a 1ms response time, AMD FreeSync Premium Pro and built-in KVM, this UltraGear monitor is fast and smooth with virtually tear- and stutter-free gameplay. The gaming monitor also provides deep, rich color and contrast courtesy of up to 95% DCI-P3 color coverage & VESA DisplayHDR 600. This UltraGear display offers a host of connectivity options such as USB Type-C with 90W power delivery, HDMI 2.1 (x2), DisplayPort, USB (x3) and 4-pole headphone jack. And with a 3-side, virtually borderless design and a screen that is height, tilt and swivel adjustable, this UltraGear monitor is the perfect centerpiece for a desktop battlestation.
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    Top comment

    "The only downside I have really come across is the fact that it has about an inch less screen height wise. My old 21:9 Ultrawide monitor had a screen height of 14.29". ...Three screens are perfectly fit in in this 19 lbs curved monitor. It doesnt weight and uses much less energy than OLED monitors. "

    See all customer reviews

    Product Description

    Bolster your battlestation! Featuring a huge 45” QHD (5120 x 1440) curved screen at a 32:9 aspect ratio, the vast display envelops gamers in play, streaming, work and creative products all on one monitor at the same time. With gaming-focused features such as up to a 200Hz refresh rate, a 1ms response time, AMD FreeSync Premium Pro and built-in KVM, this UltraGear monitor is fast and smooth with virtually tear- and stutter-free gameplay. The gaming monitor also provides deep, rich color and contrast courtesy of up to 95% DCI-P3 color coverage & VESA DisplayHDR 600. This UltraGear display offers a host of connectivity options such as USB Type-C with 90W power delivery, HDMI 2.1 (x2), DisplayPort, USB (x3) and 4-pole headphone jack. And with a 3-side, virtually borderless design and a screen that is height, tilt and swivel adjustable, this UltraGear monitor is the perfect centerpiece for a desktop battlestation.
    See all Gaming Monitors
    See all Gaming Monitors
  10. LG UltraGear 39" OLED Curved WQHD 240Hz 0.03ms FreeSync and NVIDIA G-SYNC Compatible Gaming Monitor with HDR400 - Black - Front_Zoom
    Top comment

    "For the past week, I've been testing the LG UltraGear 39" OLED Curved WQHD 240Hz 0.03ms FreeSync and NVIDIA G-SYNC Compatible Gaming Monitor with HDR10. On my desk it is replacing two 27 inch gaming monitors that I used for both gaming and productivity. ...Beautiful Ultrawide OLED Gaming Monitor...PROS - 240Hz Fast Refresh Rate - GSYNC worked great - New L Shaped Stand takes up way less space - Matte Coating helps keep reflections out of sight - Big screen CONS - Low 3440 x 1440 Resolution (~95 Pixels Per Inch) - Matte Coating has a slight "hazy" texture - No USB-C DisplayPort I think this monitor is top tier for gaming and you won't be disappointed if this is your first time switching to an OLED monitor."

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    Product Description

    Experience stunning performance with the huge 39” curved WQHD LG UltraGear OLED gaming monitor. Stay a step ahead of the competition with an ultra-fast refresh rate up to 240Hz and .03ms response time that will bring you into the game like never before¹. And with the steep and dramatic 800R curve, you’ll feel enveloped in the action from virtually all around you. This UltraGear's ultra-thin bezel design, height, tilt and swivel adjustability along with impressive connectivity options and make this UltraGear, ultra-essential for your battlestation setup.
    See all Gaming Monitors
    Top comment

    "For the past week, I've been testing the LG UltraGear 39" OLED Curved WQHD 240Hz 0.03ms FreeSync and NVIDIA G-SYNC Compatible Gaming Monitor with HDR10. On my desk it is replacing two 27 inch gaming monitors that I used for both gaming and productivity. ...Beautiful Ultrawide OLED Gaming Monitor...PROS - 240Hz Fast Refresh Rate - GSYNC worked great - New L Shaped Stand takes up way less space - Matte Coating helps keep reflections out of sight - Big screen CONS - Low 3440 x 1440 Resolution (~95 Pixels Per Inch) - Matte Coating has a slight "hazy" texture - No USB-C DisplayPort I think this monitor is top tier for gaming and you won't be disappointed if this is your first time switching to an OLED monitor."

    See all customer reviews

    Product Description

    Experience stunning performance with the huge 39” curved WQHD LG UltraGear OLED gaming monitor. Stay a step ahead of the competition with an ultra-fast refresh rate up to 240Hz and .03ms response time that will bring you into the game like never before¹. And with the steep and dramatic 800R curve, you’ll feel enveloped in the action from virtually all around you. This UltraGear's ultra-thin bezel design, height, tilt and swivel adjustability along with impressive connectivity options and make this UltraGear, ultra-essential for your battlestation setup.
    See all Gaming Monitors
    See all Gaming Monitors
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