The short answer to this question is “no”. No calories go into the body when using chewing tobacco in the traditional manner. When you chew, dip or use snuff, you typically spit out the saliva and don’t swallow the product itself. Even if you swallow your spit (gut it) you’d only get a negligible number of calories. The 2,000 calorie per can number that we’ve seen floating around the web would only be correct if you were actually eating the product itself. Not advisable and not likely.