Square chart, also called waffle chart, are a form of pie charts that use squares instead of circles to represent percentages. Similar to basic circular pie charts, square pie chart take each percentage out of a total 100%. They are often 10 by 10 grids, where each cell represents 1%. One major benefit to square chart is that smaller percentages, difficult to see on traditional pie chart, can be easily depicted.
Square Chart Generator is a free online tool that allows you to create a square chart online. You can use this tool to create your own pie chart by inputting data and download the chart image.