The caffeine content of a single can of Red Bull is 80 mg/250 ml. This is about the same as a normal coffee, or slightly less depending on the brewing method [1] However, the taurine added to it improves the absorption of the caffeine into the blood stream, thus making the same amount of caffeine more potent. Thus, Red Bull. read more
Now, with that out of the way, red bull and coffee are very different, the most important differences are: Sugar: red bull contains a boatload of sugar whilst coffee contains little to no sugar. Caffeine: depending on how you make coffee and the size of your cup, a standard can of red bull contains c. 3 cups of coffee worth of caffeine. read more