# Do laptops have a standard width/depth proportion?

In searching for a case for my laptop, I see product specs that state their case will hold a 16" laptop. This is a diagonal measurement, but I really want to know the width and depth. If laptops these days are built using a proportionate length and depth standard then there should be a math equation to use the diagonal length to determine the exact width and depth. If not then how do you determine the width and depth of a laptop if all they give you is the diagonal measurement?

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Yer drastically over thinking this my friend. There MIGHT be such a measure but you figure the case to the screen size and a few inches at most deep. How complicated does it really need to be? – OG Chuck Low Dec 16 '11 at 16:28
@OGChuckLow has it right. Laptop screens are all diagonally measured, generally all 16:9 (with a few 16:10 holdouts), and by necessity drive most of the width/depth determination. Once the bezel and trackpad are taken into account, all laptops of a given screen size are very similar in footprint. It's a Big Deal when a thin-bezeled laptop allows for a 15" laptop to have the same footprint as a normal 14" laptop. Height (or "thinness") is where all the competition is at in laptop sizes right now. – afrazier Dec 16 '11 at 16:49
If the laptop has an oversized battery that extends beyond the body (or if you might ever get one), then get a bigger case. – sawdust Dec 16 '11 at 19:58
That IS a good point Sawdust :) I know for a fact the Dell extended batteries add about a full inch or more front or back. Excellent note. – OG Chuck Low Dec 16 '11 at 20:09