if you are not too thin and not too fat, then you have a normal weight. an amount of 'normal weight' kilos depends on you height and age. if you are grown up (18 y.o.+) and you need to know your perfect (desirable) weight you need to
subtract 110 from your height in cm., the answer means your normal weight.
you can also use the body mass index calculator to calculate your body mass index (or
BMI - google it) to
recheck my results.