How much caffeine is in a typical 16oz coffee? A surprising deep dive
                                
                                
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                                    2 min read                                
                            
                                According to Healthline, a 16-ounce (grande) brewed coffee from Starbucks can contain over 300 mg of caffeine, a figure that is significantly higher than many other coffee preparations. This stark variation prompts the question: how much caffeine is in a typical 16oz coffee?