Since @psynopsis has already asked for clarification, I'm just gong to make one assumption here.
Do you mean your carbon footprint?
There are many online calculators that do this, however, be aware that you will likely get different answers wherever you go.
There is a mahalo page about it here.
And one of the many calculators out there is available here

Give them a try, and good luck!

(if you update your question I will come back and give you a better answer :) )
Source(s):
http://www.mahalo.com/carbon-footprint
http://www.carbonfootprint.com/calculator.aspx


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