How much caffeine is in 16 oz of decaffeinated coffee?
                                
                                
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                                    5 min read                                
                            
                                According to a University of Florida study, 16-ounce cups of drip-brewed decaf from nine US coffee houses contained 8.6–13.9 mg of caffeine, averaging 9.4 mg per cup. This reveals that decaffeinated coffee, contrary to popular belief, is not entirely caffeine-free.