how many mg of caffeine in red bull

A standard 8.4 fl oz (250 ml) can of Red Bull contains 80 mg of caffeine. Larger can sizes have more caffeine, for example, a 12 fl oz can has about 114 mg and a 16 fl oz can has about 150 mg of caffeine. This caffeine content is roughly equivalent to a cup of coffee from home brewing. The caffeine concentration is about 9.5 mg per fluid ounce regardless of flavor or can size.