Designing (and converting) for multiple mobile densities | Teehan Lax
…We created this conversion graphic to show how you would scale between each of the four density groups. … [The graphic above] is handy, but still requires constant switching between it and a calculator (F4, F4, F4). To save a few keystrokes and grey hairs, we built a tool for this.
The Teehan+Lax Density Converter allows you to input the width and height for any density, and instantly see the dimensions you would have to scale the graphic to for each of the other densities. You can even toggle between decimal and rounded numbers.