how heavy should a 167 cm asian guy weight?

you're quite good
dont gain fat
do muscles instead of it

you're just fat feli, quit eatting hamburgers

You are too thin. You could put on an additional 10 Kgs.

You did not say how old you are. If you are in early teens, quit thinking about weight.(either heavy or light). Your body is going through change.

If you have passed the growing years, say 18 or 19 for a guy, then do exercise and eat right.
Eating a lot of fatty foods and high calorie foods is not the answer.

Eating nutritious foods and having a regular exercise routine is the way to go for good health. The fact you are an Asian has nothing to do with seeking good health. Genetically speaking, Asians generally tend to be lower in weight. It has more to do with quality of food they eat early on from their childhood than genetics.

I know a lot of Asian origin persons in N.America who were born here are well proportioned for their height to weight. This is because they eat right and exercise and the quality of food is good here. They are quite taller compared to their parents.

I only think in Stones and Pounds so 167 cm and 48 kg = roughly FT 5. 7inch and 6stone or 97 Pounds so you should be at least 9-10 Stone or 135-140 Pounds.

...i'm an asian girl who is 165cm and i weigh 52kg..soo according to the BMI calculation you're underweight.I suggest u go eat more rice.

approximately 12 pounds.