How Much Caffeine Does a 12 oz K-Cup Have?
                                
                                
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                                    4 min read                                
                            
                                While an 8 oz K-cup typically contains between 75 and 150 mg of caffeine, a 12 oz brew will have a different concentration and total amount due to the brewing process. Determining exactly how much caffeine does a 12 oz K-cup have depends on several factors beyond just the size selection, a common point of confusion for many Keurig users.