I came across http://www.thevegancalculator.com.
It’s brilliant. You type in how long you have been vegan (years and months) and it calculates how much of the earth’s resources you have saved since that time by not eating animal products. The metrics are litres of water, kg of grain, sq. m of forest, Kg of Co2 and animal lives
I was a little bit surprised by my numbers (which you may or may not be able to see above). I was surprised that they were so high; my veganism over three years had saved 1,155 animal lives. That’s almost an animal a day. So I otherwise would have eaten the equivalent of a chicken a day as typical omnivore. That’s a truly shocking fact.
The statistical source for the calculations is http://www.cowspriracy.com/facts