Run in turbo mode for faster calculating. Shift-click the flag to run in turbo mode.
All the work here was mine. The formula used in this project is: Pi = 4 - 4/3 + 4/5 - 4/7 + 4/9... This pi calculator keeps track of the pi variable, so that each time someone runs the project, the global pi variable becomes more accurate. This may not be one of the fastest pi calculators out there, but hopefully it works.