How much caffeine does an 8 oz cup of black tea have?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                An average 8 oz cup of black tea contains approximately 40 to 70 milligrams of caffeine, significantly less than a standard cup of coffee. The exact amount is not fixed and depends on several critical factors, including the brewing process and the specific type of tea leaf used.