How much caffeine is in 10 grams of ground coffee?
                                
                                
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                                    4 min read                                
                            
                                A single Arabica coffee bean typically contains about 6 milligrams of caffeine, while a Robusta bean can have closer to 10 milligrams. When considering 10 grams of ground coffee, this species difference is the single most significant factor in determining its caffeine content, which is never a single, fixed number.