Offhand, I don't know about weight-to-size-and-age, but I'd say it will depend on your build. If your build is very light, you'll weigh less than is considered "normal".
I will add that I have a brother who's 13 and he weighs about 5 1/2 stone, and that's normal for our family.
Im 12 and 5.5 and only 4'4 though, anorexic is anything under 50 pounds, so you are fine, and also all i eat is crisps so you are fine compared to me
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To be medically diagnosed as anorexic you have to have lost a certain percentage of your normal body weight - so, as long as you haven't been LOSING weight or trying to lose weight you are probably okay. When you're 12 it might seem impossible, but don't worry about what your friends say about your weight. If you're concerned have your parents make you an appointment with the doctor, who can tell you if you're underweight or not. It's important to make sure that you're eating enough calories and a nutritious diet, because you're about the age when you really start growing, and you don't want to end up with stunted growth from not eating enough. And if you really are concerned that you might have an eating disorder, please find someone to talk to - whether it's a school counselor, a teacher, your parents, a doctor, or any other adult you trust. It isn't as much about how you look but it's about your health, and whether you are healthy and strong or not.
You Should Be 6 and a half stone OK ? no you shouldn't!!!! this is what's making girls anorexic. I'm the same height as you but 13, I'm classed as underweight, I'm 7 and a half stone. i should be nine stone. so from 8 to 9 and a half stone would be a good weight. you would be very very ill if you were 6 and a half stone!
I think about half out of 100
Four and a half stone is 25.40 kg
Seven and a half stone equals 46.50 Kg.
It means half a stone. This is not a difficult concept. (It helps to know that a "stone" is a traditional English measurement of weight equivalent to 14 pounds, so half of one would be 7 pounds.)
Half a stone is approximately 3.18 kilograms.
11.2stone = 71.1 (71.12328) kg
15.5 stone is 98.43kg
500 newtons = 50.1 kg (force) 50.1 kg = 7 stone and 12 and a half pounds
It has two shades of color [half amethyst and half citrine] 1) violet (color of amethyst stone) 2) yellow (color of citrine stone) amethyst+citrine = ametrine half amethyst and half citrine
4.5 stone = 63 pounds.
5.5 kilograms = 0.8 stone