About
A straight answer to a question a spec sheet cannot answer
Monitor Size Comparison draws two or three screens next to each other at true relative scale, then works out the measurements that follow from that size. It is a free tool, it runs entirely in your browser, and it asks for nothing.
What this site is
A monitor is sold by one number, its diagonal, and that number runs corner to corner rather than across anything you can see. A 32″ screen is 27.9 inches wide. A 27″ screen is 23.5. Neither of those figures appears on the box, and both of them decide whether the screen fits your desk and how far back you have to sit. Reading them out of a comparison chart is guesswork, so this site works them out and draws the result.
You give it a diagonal, an aspect ratio, and optionally a resolution, a panel count and an orientation for each of two or three setups. It draws all of them at one shared scale, states the difference in a sentence, checks the arrangement against your desk width and depth, and hands you a link that reproduces the whole comparison.
Why it is built this way
Monitor sizes get compared badly in two ways. Screens get resized to fit their container, which destroys the only thing you came for, and figures get copied between sites until nobody knows where they started. Four decisions follow from avoiding both.
Geometry, not a lookup table
Width, height and area come from the diagonal and the aspect ratio read as a right triangle. Nothing is typed in from a spec sheet, so the numbers hold for sizes nobody sells.
One shared scale
Every panel in the drawing is drawn in the same units at the same scale, which is the only way a size difference can be compared honestly.
The URL is the save file
A comparison is encoded in the query string, so copying the link is the same as bookmarking it. There is no account and nothing to lose.
Unknown means unknown
Set a resolution and you get a pixel density. Leave it unset and the tool says so instead of guessing a number you would then act on.
Who builds it
Monitor Size Comparison is a solo project by Mohammed Shoaib Akther. The geometry, the interface, and the writing on this site are his work, and the whole thing runs without a backend, which is why there is no account to create and no data to hand over.
Mohammed Shoaib Akther
Developer behind Monitor Size Comparison. Open to bug reports, corrections to the numbers, and requests for comparisons the tool does not cover yet.
LinkedIn profile(opens in a new tab)