Is there something online that lets you calculate your carbon footprint?

don't need it, mine is size 11...carbon footprints are an invention of radical environmentalism, why don't you just figure out how much CO2 you release into the atmosphere? Of course, do not forget to subtract for the trees you planted, or the gr you did not cut, or to add for the flatulence...actually, just pick any number out of the clear blue sky, it will give you as much validity as any silly calculation...I always liked the number 99, so i have decided that is my 'carbon footprint' it is just a valid as any other way of discerning something that does not exist...