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Not as simple as just age...There is no perfect or ideal weight for a 9-year-old because weight is related to height and body composition rather than just age. For height/weight charts of children at various stages, see the page listed under Related Questions.

Male and female weights very significantly. Simply because of body type variances. By the age of 9 both genders should have already achieved at least 75% of adulthood height (male achieves 75% at 9, female achieves 75% at 8). Other than that there are not an extreme amount of variables involved in calculating other than the typical female of that age is just slightly taller and holds onto body fat a little easier (considering the XX chromosomes tend to develop and enter puberty at an earlier age) than that of her male counterparts. All an all, females at the age of 9 are a tad bit further along in development and begin to show the natural female mental acuity for problem solving and complex reasoning skills. A boy at 9 might be roughly 133cm and 28kg. A girl at 9 might be roughly 132cm and 29kg.

So, as previously stated there is no ideal or perfect weight for a 9-year-old boy or girl or a person of any age. This is because weight is related to height and body composition rather than only age. For more information, and to view the height and weight charts of children at various stages, please see the page link, further down this page, listed under Related Questions.

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12y ago
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11y ago

A nine year old should be over 50 pounds so they are not starving or underweight, but less than 100 so they do not have a future of being overweight/obese. So, I would say anywhere between 60 at the least and 90 at the most is just fine. It just depends on your child. You can use a BMI caculator if you really want to make sure your 9 year old is healthy.

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9y ago

A nine year olds brain weighs about 5 lbs. This changes as you get older. The brain makes up 80% of the body weight when you are a baby.

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8y ago

if you are 9 u should weight 60-80 but if u r 81-110 or even more u should lose some pounds.

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13y ago
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6y ago

differs on lifestyle and what you eat but ill say max 80-90 pound

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13y ago

Approximately 65 pounds. But everyone is different, so you can be heavier or lighter depending on your body type.

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13y ago

80 to 90 lbs

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Q: How much does a 9 year old supposed to weigh?
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