Measure Square Tile Calculator, a professional tile layout diagram and qty estimate. It estimates based on tile sizes, grout gap, and starting point of layout, and generates an estimate report with number of pieces needed, waste ratio, net floor area and etc., and an exact layout diagram.
It can be used by both home owners, DIYers and even professional tile installers.
The software version of the full program can be found at www.MeasureSquare.com