Pixel-accurate · measured on your device
What is my screen resolution?
Get your exact screen resolution, viewport, pixel density, and refresh rate — measured locally, updated live.
Free to use · No sign-up required
Your screen resolution is
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The full pixel capacity of your display, before the browser window takes its share.
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Visible browser area
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Physical pixels per CSS pixel
—Hz
Frames per second
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Bits per pixel
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Width to height
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Physical pixels
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Landscape or portrait
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Form factor
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Render engine
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Operating system
All measurements happen locally in your browser.
Updates live as you resize your window.
Why it matters
Built for designers, developers, and curious minds.
Most resolution checkers give you one number and call it a day. This one gives you the full picture of your display — live.
Live, not static
Resolution, viewport, and orientation update the instant you resize, rotate, or zoom your window — no refresh required.
Measured in your browser
Every value is read directly from your browser — no account, no install, and it updates live as you resize, rotate, or zoom.
Every display detail
Device pixel ratio, refresh rate, color depth, aspect ratio, and total pixels — all in one clean readout.
Live viewport
Screen, window, and what you actually see.
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The screen is your display's full pixel capacity. The viewport is what remains after your operating system takes its bars and your browser takes its chrome. Watch each layer shrink as you resize your window — every value here updates live.
Full display pixel capacity
Display minus OS taskbars and dock
The page you actually see in your browser
Common resolutions
A quick reference for the most common displays.
See where your screen sits on the spectrum — from budget laptops to 8K flagship TVs, and the devices most people use every day.
| Standard | Resolution | Aspect ratio | Typical use |
|---|---|---|---|
| HD | 1,280 × 720 | 16:9 | Entry-level laptops, budget monitors |
| FHD | 1,920 × 1,080 | 16:9 | The most common desktop and laptop standard |
| QHD | 2,560 × 1,440 | 16:9 | Popular for gaming and productivity monitors |
| WQHD | 3,440 × 1,440 | 2.4:1 | Ultrawide gaming and productivity screens |
| 4K UHD | 3,840 × 2,160 | 16:9 | High-end monitors, TVs, and video editing |
| 5K | 5,120 × 2,880 | 16:9 | Apple Studio Display, high-end creative work |
| 8K UHD | 7,680 × 4,320 | 16:9 | Flagship TVs and professional cinema work |
| iPhone (current) | 1,179 × 2,556 | 2.2:1 | iPhone 15 Pro and Pro Max (portrait) |
| iPad Air | 1,640 × 2,360 | 1.4:1 | iPad Air and iPad Pro 11-inch (portrait) |
| MacBook Air | 2,560 × 1,664 | 20:13 | 13-inch and 15-inch MacBook Air |
| MacBook Pro | 3,456 × 2,234 | 1.5:1 | 14-inch and 16-inch MacBook Pro |
Under the hood
Ship with the right pixels.
Understanding your device pixel ratio is the difference between blurry images and crisp interfaces. Design in CSS pixels, deliver assets that match your screen's physical density, and every display — from Retina phones to 4K monitors — looks sharp.
const resolution = screen.width + " × " + screen.height;const viewport = window.innerWidth + " × " + window.innerHeight;const dpr = window.devicePixelRatio;const refresh = screen.refreshRate ?? measure();
FAQ
Frequently asked questions.
Everything you might want to know about screen resolution, viewports, pixel density, and how WhatisMyScreenResolutions works.
What is screen resolution?
Screen resolution is the number of pixels a display can show, written as width × height. A 1920 × 1080 screen has 1,920 pixels across and 1,080 down — just over two million pixels in total — while a 3840 × 2160 (4K) screen has about eight million. More pixels generally means sharper text and more room for content.
What is my screen resolution?
Your screen resolution is the width × height in pixels your display is currently running at, for example 1920 × 1080. WhatisMyScreenResolutions reads it directly from your browser and shows your exact value at the top of this page, along with your viewport size, device pixel ratio, and refresh rate.
How do I check my screen resolution?
The fastest way is to open this page — your resolution is measured automatically, no setup needed. For an OS-level check, Windows users can open Settings → System → Display and read the Display resolution dropdown, while Mac users can check System Settings → Displays.
What is the difference between screen resolution and viewport size?
Screen resolution is the full pixel capacity of your physical display (screen.width × screen.height). The viewport is the area of the page actually visible in your browser window, minus toolbars, tabs, and the address bar (window.innerWidth × window.innerHeight). A maximized 1920 × 1080 browser typically reports a viewport close to 1920 × 985 because of the browser chrome.
What is device pixel ratio (DPR) and why does it matter?
Device pixel ratio (DPR) is the number of physical pixels per CSS pixel. A DPR of 2 means a display that is physically four times as dense as a standard screen. This is why a 375-pixel-wide iPhone renders web pages that appear crisp on a display with a native resolution of 1179 × 2556. When designing responsive sites, DPR tells you which image sizes to ship.
Why does my screen resolution look different from someone else's?
Displays ship in many resolutions and sizes, and the same diagonal size can have different pixel densities. The physical pixels are fixed by your hardware, but how content is rendered also depends on your operating system's display scaling and your browser zoom, which change the effective DPR.
What is the refresh rate of my screen?
Refresh rate is how many times per second your display redraws, measured in hertz (Hz). Standard screens run at 60 Hz; gaming and high-end displays often reach 120, 144, or 240 Hz. Your browser only exposes a refresh rate value on some devices, so WhatisMyScreenResolutions measures it empirically when it isn't reported.
What screen resolution should I use?
Always use your display's native resolution — the option marked Recommended in your operating system's display settings — because it matches the panel's physical pixels exactly for the sharpest text. If you're shopping for a monitor, 1920 × 1080 (FHD) is a comfortable minimum, 2560 × 1440 (QHD) is the sweet spot for 24–27 inch displays, and 3840 × 2160 (4K) shines on 27-inch and larger screens.
How do I change my screen resolution?
On Windows, open Settings → System → Display and choose a resolution in the Display resolution dropdown. On macOS, open System Settings → Displays and pick Scaled to select a resolution. Android and iOS devices scale automatically and expose only a limited set of display modes.
How can I increase my screen resolution?
Pick the highest resolution your display supports in your OS display settings — the Recommended option is the maximum the panel can physically show. If it's greyed out, update your graphics driver or check that your cable (e.g. DisplayPort or HDMI version) supports it. You can't go beyond the native maximum, though GPU supersampling (NVIDIA DSR, AMD VSR) can render at a higher internal resolution and downscale for sharper images.
How do I fix my screen resolution?
Set the resolution marked Recommended in your display settings, then restart the computer. If that doesn't help, update your graphics driver (and monitor driver on Windows), reseat the cable, and confirm your connection supports the resolution you want.
How do I check my screen resolution on Windows?
Right-click the desktop and choose Display settings, or open Settings → System → Display. The current resolution is shown in the Display resolution dropdown, and the entry marked Recommended is your display's native resolution. Windows 11 follows the same path.
How do I check my screen resolution on Mac?
Open System Settings → Displays. The active resolution is highlighted under Scaled, and the default usually reads Default for display — your native resolution. Holding Option while clicking Scaled reveals additional resolutions.
How do I check my screen resolution on iPhone?
iPhones don't expose a user-changeable resolution — it's fixed by the model and always runs at its native pixel density. Check the spec sheet for your model, or look under Settings → Display & Brightness for text size and zoom options.
How do I check my screen resolution on Android?
Open Settings → Display and look for a Screen resolution or Display resolution entry (the label varies by manufacturer). Not every Android device exposes this setting — many adjust resolution automatically to save battery.
Smartphones with best screen resolution?
Top-tier phones include the iPhone 17 Pro Max (2868 × 1320) and iPhone 16 Pro Max (2868 × 1320), the Samsung Galaxy S25 Ultra (3120 × 1440), and the Sony Xperia 1 VI (3840 × 1644, a true 4K display). All exceed 450 ppi for very sharp text and images.
Is my screen resolution data sent to a server?
No. Every measurement on this page is computed locally in your browser by WhatisMyScreenResolutions itself — your display data isn't collected or stored by us.
Screen resolution guide
Screen Resolution Explained: Sizes, Devices, and How to Check Yours
Screen resolution determines how sharp text, images, and video look on your display, and it's one of the first specs anyone asks about when a new monitor, laptop, or phone is on the table. Whether you're trying to fix a blurry picture, comparing what is my screen resolution against a new purchase, or just shopping for the best screen resolution sizes for your setup, a little background goes a long way. This guide covers what resolution actually means, how to check your own in seconds, and where the most common display sizes — from 4K monitors to the Steam Deck — fall on the spectrum.
What is screen resolution?
Screen resolution is the number of pixels a display can show, written as width × height. A 1920 × 1080 screen has 1,920 pixels across and 1,080 down — just over two million pixels in total. Higher numbers mean more pixels, which usually translates into sharper text, finer detail, and more room for windows and applications. The resolution is a fixed property of your display hardware, but the operating system can run the panel at a lower resolution if you change the setting.
Two related terms are often mixed up with screen resolution. The first is your viewport — the visible area of the browser window after tabs, toolbars, and the address bar take their share. It's always a bit smaller than the screen. The second is device pixel ratio (DPR), which is how many physical pixels make up one CSS pixel. Phones such as the iPhone run at DPR 2–3, which is exactly why they look sharp even though their CSS dimensions are modest.
What is my screen resolution?
Wondering what's my screen resolution on this device? The fastest way to find out is to open WhatisMyScreenResolutions. It reads your display's dimensions directly from the browser and shows your exact width × height, along with your viewport size, device pixel ratio, refresh rate, color depth, and more. The measurement happens entirely on your device.
Whether you search for whats my screen resolution or the more formal what is my screen resolution, the answer is the same, and it's a single number. On a laptop or phone, the value you'll see is normally the native resolution the device shipped with. On an external monitor, it's whatever resolution your operating system is currently driving the panel at. If things look blurry, the usual fix is to switch back to the panel's native resolution — the common screen resolution sizes will help you recognize it at a glance.
Common screen resolution sizes
Most displays fall into a small set of familiar standards, and the common resolutions table lists them with their aspect ratios:
- 1280 × 720 (HD) — small laptops and budget panels
- 1920 × 1080 (FHD) — the most common monitor and laptop resolution by far
- 2560 × 1440 (QHD) — the sweet spot for 24–27 inch monitors
- 3440 × 1440 — ultrawide monitors for productivity and gaming
- 3840 × 2160 (4K) — high-end monitors and modern TVs
- 2560 × 1600 and 2880 × 1800 — common laptop resolutions with taller 16:10 ratios
Knowing these screen resolution sizes helps you spot whether a display is running at its correct setting and compare options when you shop.
4K screen resolution
4K — officially Ultra HD — is 3840 × 2160, exactly four times the pixels of 1080p. With about 8.3 million pixels, 4K screen resolution keeps text razor sharp on 27-inch and larger displays and is now the standard for new TVs. It demands more graphics power for gaming, but for productivity and media it's an excellent choice that shows dramatically more content on screen.
iPhone screen resolution
iPhones run at fixed native resolutions set by the hardware. The iPhone 16 lineup ranges from 2556 × 1179 on the base model to 2868 × 1320 on the Pro Max, and the iPhone 17 series follows the same pattern at the same resolutions. iOS always renders at the native iPhone screen resolution at a DPR of 2–3, and there's no user-facing setting to change it — the system keeps the panel at its sharpest by design.
Steam Deck screen resolution
The Steam Deck uses a 1280 × 800 (800p) display in a 16:10 ratio on both the LCD and OLED models. That Steam Deck screen resolution is a deliberate choice — it keeps demanding games playable on the handheld's integrated GPU at 60 Hz, or 90 Hz on the OLED model. On a seven-inch screen, 800p is dense enough to look crisp while leaving plenty of performance headroom.
How to choose the right screen resolution
For desktop monitors, always use the panel's native resolution — the option marked Recommended in your operating system's display settings. Lower settings stretch pixels and look soft, while higher settings simply aren't supported by the panel. Gamers often pick QHD for a strong balance of sharpness and frame rate, while anyone doing lots of windowed work benefits from 4K on a 27-inch or larger display.
If your screen resolution ever looks wrong, or the higher options are greyed out, check your graphics driver, your cable (HDMI and DisplayPort versions matter), and the Recommended setting in your display options. And if you're ever in doubt about the exact number, WhatisMyScreenResolutions is the fastest way to check — it reads your live resolution instantly and updates as you resize, rotate, or change displays.
That's the short version of everything most people need to know about screen resolution. Bookmark this guide and WhatisMyScreenResolutions will always be ready to tell you your exact width and height, whatever device you're on — a 4K monitor at your desk, an iPhone in your pocket, or a Steam Deck on the go.