Say Hello To Gridulator
Tell Gridulator your layout width and the number of columns you want, and it’ll spit back all the possible grids that have nice, round integers. Just the thing for pixel-based designfolk. There are inline previews, courtesy of the canvas element, and when you’re all set Gridulator can crank out full-size PNGs for you, ready for use in your CSS, Photoshop docs, or what have you. And there’s full keyboard control for you snazzy power users.