This site started out as a spreadsheet in 2014 after the birth if my first child. As a natural born nerd, opening a spreadsheet is usually the first thing I do when analyzing anything. Curious to know exactly how many diapers (and their cost) I would be required to buy for my son, I started a spreadsheet and began running some numbers. A little over a year later I would get the chance to use the analysis again for my daughter. And now I thought I would share the calculator with everyone as curious as I was about how to estimate diaper count and of course to save some money when buying diapers.