Most designers use 1024x768 as a baseline for website development. That allows them to use css grid systems like 960 & blueprint to easily outline content. Is there simila
I've found https://www.mydevice.io/#compare-devices to be the best site for determining this kind of thing. I was looking for the same and found this question via a Google Search, but most of the other websites mentioned above give you device pixels, not CSS/JS pixels, which is all that really matters in web development.
Sure, an iPhone 8 Plus may have 1080 actual pixels across its narrowest axis, but that is completely irrelevant to the topic at hand, considering that those pixels are much, much smaller than your HD TV for example. I wanted to measure the width of the display in relation to how a browser actually renders a mobile site and mydevice.io gives you that, as well as the physical dimensions. Win win! ;-)