Unless you have access to a measuring scale that can digitally display how much you weigh in kilograms, you may find that you will need to find out how heavy you are using traditional scales that will provide you with an answer in stones and pounds. From here, you can use online conversion websites such as www.convertunits.com/from/stone/to/kg, or it can be as simple as typing '10 stone to kg' into the Google search bar. From there, the search result you will see will be your correct weight delivered in the unit of measurement you want.
Don't forget that if you are ever dissatisfied with your weight, there are things you can do to reduce the kilogram value to a far nicer number. It can be as straightforward and simple as eating healthier and exercising regularly. Also, many people don't seem to realize that extremely high calorific content that can be found in alcohol. A small glass of wine can include as many as 134 calories, and so you should try and monitor how much you drink if you intend on keeping your slender figure!