Health-calc.com
Health-calc.com

Body Mass Index Children US

BMI children USThis module calculates Body Mass Index for children from age 2 to age 18 and classifies the result according to the guidelines given by the U.S. Department of Health & Human Services. It also has an optional evaluation of height in relation to age.

Instructions:
1. Enter values for gender, height and weight.
2. The result is interpreted within four categories: Underweight (<5th percentile), Healthy weight (5th-85th percentile), Overweight (85th-95th percentile) and Obese (>95th percentile).
3. To evaluate height in relation to age click the "Evaluate height button"
4. Please note, that BMI is only a very rough predictor for overweight in individuals.

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Background

For adults, the body mass index limits for overweight and obesity are straight forward (overweight = BMI > 25 and obesity = BMI > 30). For children this is much more complicated as the limits vary a lot depending on age. This calculator uses the US guidelines that are based on fixed percentiles from a large reference population. 

A BMI of 20 indicates obesity in a 6 year old girl, whereas it would represent healthy weight for a 13 year old girl. However, as growth of children varies, the final evaluation should always be based on a several factors including physical growth, muscularity and subcutaneous fat deposits.

The calculator also includes the possibility to evaluate height in relation to age. If the child/youth scores in the high percentile range on height (above average) this could indicate that physical development is ahead of chronological age. As higher BMI is expected with increasing age (above age 6), this information can assist in a qualified evaluation of BMI.

References

The Centers for Disease Control and Prevention (CDC). BMI - Body Mass Index: BMI for Children and Teens.

Mei Z, Grummer-Strawn LM, Pietrobelli A, Goulding A, Goran MI, Dietz WH. Validity of body mass index compared with other body-composition screening indexes for the assessment of body fatness in children and adolescents. American Journal of Clinical Nutrition 2002;7597–985.

Hammer LD, Kraemer HC, Wilson DM, Ritter PL, Dornbusch SM. Standardized percentile curves of body-mass index for children and adolescents. American Journal of Disease of Child. 1991; 145:259–263.

Pietrobelli A, Faith MS, Allison DB, Gallagher D, Chiumello G, Heymsfield, SB. Body mass index as a measure of adiposity among children and adolescents: A validation study. Journal of Pediatrics. 1998; 132:204–210.

 

Comments  

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#523 Sam 2017-05-22 04:03
Girls, You calling your selves 12 and 106, Well I am 11 and I weigh Over 148, But I am skinny, only reason I'm here is too see if its normal, But now I see 10 year old's wanting to loose weight when they a younger then me! Maybe its my body type, but holy God.
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#522 Gabby 2017-05-18 01:53
Quoting Ashley:
Hi so i am 12 almost 13 and I weigh 134 pounds and I am 5'8 , every time i look at myself i see fat. Everyone else are skinny. am I healthy?

I am 11 and weight 170 pounds but I am also a country girl
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#521 Bailey 2017-05-18 01:25
I'm 12 and 5'7 but I weigh 106 pounds..i's that underweight?
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#520 Maddie 2017-04-19 00:31
I'm 11 years old I'm 5'3...5'4..... But is it normal for me to weigh 99 pounds because I weigh around 120 something like that but can anyone tell me if 99 pounds is healthy for an 11 year old girl that is 5'3....5'4
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#519 Lauren 2017-04-15 20:36
Hello, I am 12 5'4' and 135 pound, but I play a sport that you have to have a lot of muscle, is it all fat or a little fat and a lot of muscle? I do not look fat or skinny so I don't know.
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#518 Ashley 2017-04-08 19:47
Hi so i am 12 almost 13 and I weigh 134 pounds and I am 5'8 , every time i look at myself i see fat. Everyone else are skinny. am I healthy?
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#517 Nena 2017-04-06 02:30
I'm 12 and weigh 185 I think . I am fat but don't look morbidly obese...
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#516 Sofia 2017-03-30 20:52
Quoting Skyla:
I weigh 135 pounds and I am 11 year old but I am 5.1". AM I FAT????


Omg same I'm 11, 5'1 and about 130 pounds. Me and my friends are kinda chubby but everyone in my school are sticks so I'm confused.
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#515 Bella 2017-03-30 20:09
Y'all keep saying 12 year olds should way 80-90 pounds. That might be true for some people but not everyone! It depends on your height like if your 4'10 you should weigh less that somebody who is 5'2. So I think instead of listing to other people on the internet, just ask your doctor!!!!
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#514 Stormi 2017-03-29 17:21
I am 15 at the height of 5'2 and the weight of 176 is that normal for my age?
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#513 Airyan 2017-03-23 01:35
I am 11 years old and i am 98.8 pounds.... i am not sure if that is healthy or not
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#512 Angelina 2017-03-19 22:21
I am 10 years old and five months ,I'm a female. I weigh 98.6, am I healthy, because my friends say I am but I don't think so , my friends also weigh a lot but I think it's just because of their muscle ,oh well. I also love art of that ever after because I'm in fifth grade and I already know algebra one and I also know how much is pi It is 3.14 1592 6535 8979 3238 4626 4338 3250 7928 8419 6971 39 93 That's all I know so far about pi.!!
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#511 Angelina 2017-03-19 22:13
I'm a girl ,I am 4'10 or 4'11 and I weigh 98.6 am I
healthy ? Oh ya btw I love art and math I'm kinda a Mary nerd, and I love art because it expresses my feelings !
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#510 Jakie 2017-03-18 16:16
Quoting Shelby:
Hey, I wish I had some of your guys' problems being 12 5'1 and 130 lbs, I'm almost 12, I'm 5'0 and I'm 179 lbs. and I'm hella fat and insecure and dieting and everything isn't working I've tried. And I excersise 3 times a day, and you guys thought you were over weight I just want to die, I'm way to fat for my age. People also call me rude names because of my body. Can someone please help me of my bad body cause anything I do doesn't work.
Hey! My mother is pre diabetic and there's a few things she does to help maintain her weight. I hope these can help you! Do you eat out? In places like MCDonlads, Burger King, etc. Try to stay away from those places and eat healthy foods at home.
Do you eat fairly healthy foods? I would recommend going vegan or vegetarian. Also, what type of exercises do you do? Try to look up videos of different kinds of exercises to find a routine that works for you. :) Hope this helps!
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#509 Jakie 2017-03-18 16:09
Hey! I just turned 14 on March 16th. I'm in 8th grade and I just got my weight/height checked in my annual physical with my doctor. I'm 4'11 and 87 pounds. Is this normal? Should I be worried? I exercise regularly and I'm a very healthy person! :) Thank you!
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#508 Destiny 2017-03-13 06:17
Quoting ryan:
Hey my name is ryan im 12 years old im 5"7 and im 200 pounds is that normal weight for a 12yr old

no Ryan it's not it is actually obese a 12 yr old should weigh 80-90 pounds
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#507 Skyla 2017-03-12 18:29
I weigh 135 pounds and I am 11 year old but I am 5.1". AM I FAT????
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#506 Caitlyn 2017-03-09 17:25
I'm 13 5'0 foot and 150 pounds I'm 5 pounds over weight for my age and height I'm not ashamed. But I am starting to exercise and eat more healthy but for those who are ashamed and want to kill their selves because they feel over weight please don't please like your body the way it is and if you can't do that just try to eat more healthy and exercise on a regular basis
Quoting Shelby:
Hey, I wish I had some of your guys' problems being 12 5'1 and 130 lbs, I'm almost 12, I'm 5'0 and I'm 179 lbs. and I'm hella fat and insecure and dieting and everything isn't working I've tried. And I excersise 3 times a day, and you guys thought you were over weight I just want to die, I'm way to fat for my age. People also call me rude names because of my body. Can someone please help me of my bad body cause anything I do doesn't work.
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#505 Shelby 2017-03-08 02:11
Hey, I wish I had some of your guys' problems being 12 5'1 and 130 lbs, I'm almost 12, I'm 5'0 and I'm 179 lbs. and I'm hella fat and insecure and dieting and everything isn't working I've tried. And I excersise 3 times a day, and you guys thought you were over weight I just want to die, I'm way to fat for my age. People also call me rude names because of my body. Can someone please help me of my bad body cause anything I do doesn't work.
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#504 Er 2017-03-05 21:01
Am I too fat?? I'm 14 yr old girl at 5'6 and 106.5 lbs.... should I lose some weight??
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#503 Maddy 2017-03-04 00:03
I'm a 13 year old girl, I'm 5'5, and I weigh about 100 pounds, does that sound fat?
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#502 ryan 2017-02-26 21:42
Hey my name is ryan im 12 years old im 5"7 and im 200 pounds is that normal weight for a 12yr old
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#501 Meghan 2017-02-21 03:23
Hey I am 11, 4ft10, and I weighed myself today and I weigh 121 lbs. I feel fat because I have a gut and all this extra skin on me and my friends weigh at the least 80. Some say 70. I feel like I am fat and I want to know if this is normal for kids my age.
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#500 James 2017-02-21 02:36
Hi my name is James and according to the messages here I'm normal. I hear 12 years old 165 pounds, and 5'2 for a girl. I'm 12, 149 pounds, 5'6 1/2. :S
)
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