IDC in England has created this simple Life Cycle Analysis Calculator. This free online tool was developed in response to a need. IDC surveyed a number of design and engineering firms that all agreed - paying attention to a product's environmental impact throughout its life is becoming increasingly more important, but that many firms don't currently do the calculations. The Life Cycle Analysis Calculator helps estimate the carbon footprint and embodied energy of any product and its packaging. This is a great resource for designers. Its quick and easy. I will definitely use it in the future. (Found through Core77).