How many units are in a bottle of cider?
                                
                                
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                                    4 min read                                
                            
                                According to Drinkaware, a 500ml can of 5% ABV cider contains 2.5 units, but a strong 7.5% cider of the same size holds 3.75 units. This significant variation means simply looking at the bottle size isn't enough to know the alcohol content; you must check the alcohol by volume (ABV) and volume to calculate the true number of units.