About

Screen Size Checker is a free tool that tells you the size of your screen. It shows an estimate in inches and cm the moment the page loads. For the exact size, you match a bank card to an outline once. It also shows the width and height, the pixel density, and what your browser reports about the screen.

Who it is for

People who need the size of a laptop, monitor, phone or tablet: for a sleeve or case, a replacement screen, a resale listing, or to compare with a new monitor. Web developers use the pixel facts: screen, viewport, pixel ratio and device pixels.

How it works

A web page knows how many pixels a screen has, but not how big a pixel is. So the tool first matches your pixel count to a list of common phones, tablets, laptops and monitors. That gives an estimate at once. It marks this as Estimated. Every bank card is 85.6 mm wide. When you match the card, the tool learns how many pixels make a millimeter on your screen. From that it works out the physical size and marks it Measured.

The result is only as good as the match you make. Match carefully and use the 0.1 mm buttons. Keep the browser zoom at 100 percent. The match is saved per screen, and the online ruler on this site uses the same record.

Privacy

Everything runs in your browser. We do not send your screen details or your card match anywhere. We do not ask you to create an account. Read the Privacy Policy.

Who made this

This tool was built by Abhishek Mishra, a software development engineer (SDE) at Oqu AI, and is published by Bingemind.

Phone and WhatsApp: +91 63760 68337 (message on WhatsApp).

Contact