What is my screen resolution? The answer is in large digits at the top of this page: the number of real pixels across and down your screen, worked out from what your browser reports. Underneath you get the scaling Windows, macOS or your phone applies, the size of your browser window, the aspect ratio, color depth, refresh rate, HDR and color gamut, each with a copy button. Enter your screen size, or measure it with a bank card, to get pixels per inch. This screen resolution test works on Windows, macOS, Linux, ChromeOS, iPhone, iPad and Android. With two monitors, it reads the one the browser window is on.
How to read your results
- Screen resolution is the physical resolution, for example 1920 × 1080. This is the number to quote when someone asks what your resolution is.
- Screen in CSS pixels is the smaller size websites lay out for, after scaling.
- Scaling is how much the system enlarges everything. 150% means one CSS pixel covers 1.5 real pixels in each direction.
- Browser window is the space inside your browser. Resize the window and it changes live.
- If you have more than one screen, drag this window to the other one and the numbers update. In Chrome and Edge on a computer, Show every screen lists them all after you allow it.
- Press Copy all to paste every value into a support ticket, a forum post or a design brief.
What the numbers mean
| Readout | Example | What it tells you |
|---|---|---|
| Screen resolution | 2560 × 1440 | Real pixels on the screen |
| Screen in CSS pixels | 1707 × 960 | The same screen after 150% scaling |
| Scaling | 150% | Pixel ratio of 1.5, set in display settings |
| Browser window | 1680 × 940 | Space for the page, which media queries use |
| Usable area | 1707 × 912 | The screen minus the taskbar or Dock |
| Aspect ratio | 16:9 | Width to height |
| Color depth | 24-bit | 8 bits for each of red, green and blue |
Why the resolution looks smaller than your monitor
Most screens today have more pixels than text needs, so systems scale things up. Windows does it with the Scale setting: a 1920 × 1080 laptop at 125% behaves like 1536 × 864, and at 150% like 1280 × 720. Websites only see that smaller size, which is why many sites tell you the wrong resolution. This page multiplies the CSS size by the pixel ratio to get back to real pixels.
Macs do it differently. A MacBook Air with a 2560 × 1664 panel shows things at the size of a 1470 × 956 screen by default. macOS draws the picture at twice that, 2940 × 1912, and then fits it to the panel. On a Mac, the number at the top is the size macOS draws at; the panel's own resolution is listed in System Settings, General, About, System Report, under Graphics/Displays.
Browser zoom also changes the pixel ratio. If the scaling looks odd, press Ctrl + 0, or Cmd + 0 on a Mac, to reset zoom to 100%.
How to check and change your screen resolution
Windows 11 and 10
Open Settings, System, Display. Display resolution shows the current resolution; the one marked Recommended is native. Scale is just above it. With several monitors, pick the right one in the picture at the top of the page first.
Mac
Open System Settings, Displays and select the display. The size options run from Larger Text to More Space, and the middle default suits most people. For an external monitor, Advanced lets you show every resolution as a list.
iPhone and iPad
The resolution is fixed and always native. Settings, Display & Brightness, Display Zoom changes how large things look, between Default and Larger Text.
Android
Samsung Galaxy phones with a high resolution screen have Settings, Display, Screen resolution, which switches between HD+, FHD+ and QHD+. Pixel Pro models have Screen resolution in Settings, Display & touch. Most other phones only offer Display size or Screen zoom, which works like scaling.
Chromebook
Open Settings, Device, Displays and use Display size to make things larger or smaller.
Common screen resolutions
| Name | Pixels | Aspect ratio | Typical screens |
|---|---|---|---|
| HD | 1366 × 768 | 16:9 | Budget laptops |
| Full HD, 1080p | 1920 × 1080 | 16:9 | Most monitors and laptops |
| WUXGA | 1920 × 1200 | 16:10 | Business laptops and monitors |
| QHD, 1440p | 2560 × 1440 | 16:9 | 27 inch gaming monitors |
| WQXGA | 2560 × 1600 | 16:10 | 13 to 16 inch laptops |
| Ultrawide QHD | 3440 × 1440 | 21:9 | 34 inch ultrawide monitors |
| 4K UHD | 3840 × 2160 | 16:9 | TVs, 27 to 32 inch monitors |
| 5K | 5120 × 2880 | 16:9 | Apple Studio Display |
Apple laptops use their own sizes: 2560 × 1664 on the 13 inch MacBook Air, 2880 × 1864 on the 15 inch Air, 3024 × 1964 on the 14 inch MacBook Pro and 3456 × 2234 on the 16 inch Pro. To check a 4K screen shows every pixel, open the 4k test pattern.
What is my screen size?
The size of a screen is measured corner to corner across the visible picture, in inches. A browser has no way to read it, so this page gives you two ways to find it. If you know the size, type it in and you get pixels per inch and the width and height. If you do not, hold a bank card against the screen, move the slider until its top and bottom edges sit on the two yellow lines, and press Use this size. Cards share one standard size, 85.60 × 53.98 mm, so the gap tells the page how big a pixel is. Zoom must be at 100% for this to work. For more screen maths, the ppi calculator and aspect ratio calculator work from any numbers you type, and the monitor size calculator compares two screens.
Resolution problems and fixes
- Text looks blurry. The screen is not at its native resolution. Choose the Recommended value in Windows, or the default in macOS, and use scaling to change the size.
- Black bars around the picture. The resolution has a different aspect ratio from the screen, such as 1920 × 1080 on a 16:10 laptop. Pick a resolution with the same ratio as the native one.
- The native resolution is missing from the list. The graphics driver is missing, or a cable, adapter or KVM switch cannot pass the screen's details. Install the driver from NVIDIA, AMD or Intel and connect directly.
- A second monitor has the wrong resolution or none at all. Our guide for a second monitor not detected covers detection, cables and drivers.
- Everything is too small on a 4K screen. Raise the scaling to 150% or more instead of lowering the resolution, which keeps text sharp.
What a browser can and cannot tell you
Your browser shares the screen size in CSS pixels, the pixel ratio, the window size, color depth, orientation and whether HDR and wide color are on. From those the page works out the real resolution and measures the refresh rate from animation frames, which the refresh rate test does in more detail. It cannot read the physical size of the screen, the monitor's model or the highest resolution it supports. On a Mac with a scaled setting, it sees the resolution macOS draws at rather than the panel's own.
Screen resolution questions
Why does my screen resolution show 1536 x 864?
Your screen is 1920 x 1080 with Windows scaling set to 125%. Windows enlarges everything by 1.25, so websites see a 1536 x 864 screen. The large number at the top of this page multiplies the two back together and shows the real 1920 x 1080.
How do I check my screen resolution on Windows 11?
Open Settings, then System, then Display, and look at Display resolution. The value marked Recommended is your screen's native resolution, the one that looks sharpest.
What is the best screen resolution to use?
Your screen's native resolution, which Windows marks as Recommended and macOS uses by default. Any other resolution has to be stretched to fit the pixels and looks soft. If text is too small, raise the scaling instead of lowering the resolution.
What is my screen size in inches?
A browser cannot read the physical size of a screen. Check the box or the model's spec sheet, measure the visible area from corner to corner, or use the bank card panel on this page, which works out the size from your resolution.
Is 1920 x 1080 the same as 1080p?
Yes. 1920 x 1080 is called Full HD or 1080p, after its 1080 rows of pixels. 2560 x 1440 is QHD or 1440p, and 3840 x 2160 is 4K UHD, sometimes called 2160p.
Why is my phone's resolution so small here?
Phones report their size in CSS pixels, which are several real pixels each. An iPhone 16 reports 393 x 852 with a pixel ratio of 3, so its real resolution is 1179 x 2556. The large number on this page already does that sum.
Can websites see my screen resolution?
Yes. Every website can read your screen size, window size and pixel ratio, which is how pages fit your screen. This page reads them in your browser and does not send them anywhere.