Decaf coffee is not completely caffeine-free; it still contains trace amounts of caffeine. On average, a 8-fluid ounce cup of decaf coffee contains about 2.4 mg of caffeine (31), compared to 96 mg found in regular coffee (3).
While this amount may be negligible for most people, it’s important for those who are highly sensitive to caffeine or trying to eliminate it completely from their diet, to take note.
With this in mind, if you’re looking for a truly caffeine-free alternative, herbal teas or caffeine-free alternatives like chicory may be a better option.