Hi Naima! I have a similar scale but being Chinese, they don't have the option to change the unit of weight. You have two options: 1 - Weigh an pregnant package, in which you know the kilage, and check if the weight is the same. Many times these scales indicate a unit of weight painted on the machine but it is wrong. 2 - If it is new, claim the seller and exchange it for one that weighs in kg I hope you help. Regards