What Does The UK Call Calories? Understanding kcal and kJ on Food Labels
                                
                                
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                                    2 min read                                
                            
                                According to the NHS, an average man in the UK needs around 2,500kcals a day to maintain a healthy weight, while an average woman needs 2,000kcals. This essential energy information, displayed prominently on food packaging, can be confusing due to the variety of units used.