BottleVis.com
Bottlevis helps bartenders, restauranteurs or home enthusiasts calculate and visualize how many drinks are in a liquor or wine bottle. Use this to estimate and track how many servings are left when performing stock inventory, or calculating profits and wastage.
Although bottle shapes and sizes vary, this works for wine, tequila, rum, vodka and other liquor bottles that come in standard commercial volumes.
Calculation depends on the bottle size and the amount used in a drink portion. Default values are the standard 750mL Bottle with 1.5oz serving.