The infographic above shows caffeine concentration: it reflects the amount of caffeine per ounce – you can use these numbers to determine how much caffeine you’re consuming. Simply multiply the milligrams per ounce (in the graphic) by the ounces in a beverage.
*Note: Caffeine in coffee and tea varies; amounts listed are average.
Mountain Dew: (40 oz fountain drink) x (4.5 mg caffeine per oz) = 180 mg total caffeine
Monster M3 Energy Drink: (5 oz bottle) x (32 mg caffeine/oz) = 160 mg total caffeine
Starbucks Roast Coffee Venti: (20 oz) x (20.7 mg caffeine/oz) = 414 mg total caffeine