Gridulator is a quick and easy grid calculator for pixel pros (and novices).
All that the user has to do in order to create a grid is to select the number of columns and the width for a grid with round integers to be generated. This grid can then be turned into a full-size PNG that will make applying it to the project in question something entirely painless.
Some neat features include an inline preview tool that will let you make all the adjustments that might be necessary in a timely way, and also the possibility to use your keyboard when editing the actual values of the grid itself. You might think these are minor details, but they make the whole application even more appealing and (in the end) more usable and practical than it already was to begin with
- Website: http://gridulator.com/