How much caffeine does coffee contain?
The species of the plant and the geographic region and altitude of growth determine a coffee’s caffeine content. Robusta coffees, for example, normally have twice the caffeine content of Arabica coffees. A five-ounce cup of coffee will contain 75 to 155 milligrams of caffeine. Informational Note: Normally, the denser beans grown at high altitudes have a lower caffeine content as do darker roasted coffees. It is important to note that all Arabica coffees are naturally about 98.5% caffeine-free because they contain 1-1.5% caffeine by weight. To qualify as decaffeinated, however, they must have 97% of this 1-1.5% removed.
