Mix Your Own Drink and Determine the Calories
So you're wondering how many calories are in a martini or a Jack and Coke. The Efficient Drinker brings you the Virtual Mixologist, a tool that can help you calculate all sorts of awesome information.
All of the information is quoted in ounces. To see the underlying calorie and ABV values, check liquor and mixers. Remember that a shot is considered 1.5 oz.