How Tall Is Death The Kid From Soul Eater?

This is going to require a serious amount of speculation.

Death the Kids height is widely assumed by the fan population to be around 5'3''

Therefore judging from his build as he is very skinny I would put him in the weight category of 120 Pounds (54.5kg), but talking into account that he is at a extreme military academy I would assume he does a lot of muscle work and that his body mass index is fairly low. Since muscle weighs more than fat I would put his weight to be somewhere in the range of 135-145, to be any heavier tan that he would have to become significantly bulkier at that height.