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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#551 Nanaki 2017-12-05 03:28
Im 14.5 years old, 4'10 and 81 pounds. My BMI is in a healthy range but my parents tell me i should eat more. Should I eat more?
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#550 Nevaeh 2017-12-04 23:47
Hi my name is Nevaeh and I’m 11 and I weigh 95.0 pounds and I’m 4’9. Am I too heavy?
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#549 Meg 2017-12-04 21:11
Hi, I am almost 13 and I weight 90.6 lbs do I need to loose weight because my friends weight a lot less but aren't any skinnier tan me?
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#548 hi 2017-12-03 20:51
12 years old, I'm 4'11 and I'm 82 or 81 and my mom thinks I'm not eating enough is that true.
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#547 sophia 2017-11-27 06:37
I'm 14 and 5'9 and weigh 104 lbs... am I underweight?
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#546 Cassie 2017-08-14 22:46
Im 17. Ill be 18 in 6months. Im 190 pounds and 5'4. Im okay with my body but i dont like my stomach. How can i fast and easy lose 40 pounds or so?
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#545 Bre 2017-07-31 22:06
Im 12 yrs old and. 5"7 162.4 pounds .is that normal?
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#544 jackson 2017-07-28 20:33
hi i'm jackson (FtM Transgender). i'm around 169-170cm (5'7?), 13 years old (14 in november) and i weigh 116lbs. i feel very fat :// i was at 130lbs in may, and did everything i could to lose weight. and i have. but not enough.
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#543 Ashley3 2017-07-28 19:29
Hi! I am 12 turning 13. I'm 5'2" and weigh 106 pounds is that healthy? Also should girls my age have 19% body fat or should it be lower? Please help! Thanks
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#542 Tamira 2017-07-21 21:35
Hi im 11 years old and i am 5,3 and i weigh 83.i 8 8 pounds is that too skinny?
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#541 tiff 2017-07-21 19:13
Quoting Madison:
Hi, I am 12 years old and I am 5,7 and I weigh 181 pounds and I hate my body weight so much and people say bad things about me I want to lose weight but it is so hard bc healthy food I so much money and it's hard to go on a diet plz someone tell me what I should do I hate my weight so much I just want to be skinny for once!!!!!


diet is crucial to maintaining a good weight, but if it is unaffordable here are a few tips

- drink oolong or green tea everyday or lemon in warm water. if you can't, drink lots of water.
- don't drink anything except for water and tea or maybe coffee but no milk and sugar.
- if u do like sugar, a good substitute will be honey.
- just do ten crunches every day ONLY 10. it will eventually add up and u will lose weight. u won't see the results so quickly, but after some months u will. for faster results add cardio.
- be confident in yourself. motivate yourself
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#540 tiff 2017-07-21 19:06
hi! i'm 12, i am 5 foot 7 inches, and i think i'm about 130 pounds. however last year when i was 11, 5"3-5"4 i was only 110. i don't know. every time i go to the doctor to get weighed the doctor says i don't look my weight and i agree i don't look my weight but i don't have muscle and i am a bit chubby. i wanna lose the chubbiness and gain muscle instead but not like a lot. just enough so that i look lean and athletic. i don't want to binge, purge, or fast like some girls my age or a little older than me. that's unhealthy and i hope they recover. anyway sorry for being off topic. i just want some tips from u guys. i have an app called fitstar and i do a workout everyday or every other day, and i don't eat like crazy unlike some of my friends while they maintain a skinny body without excersize. it seems like i'm making no progress at all. i'm feeling very insecure and i want to go to my new school this year with a nice figure. i just want some tips. am i doing this wrong? much love, tif
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#539 Nicole 2017-07-12 15:12
I am 14 years old i weigh 135.8 i am 5.3 or 5.4 i just want to know am i over weight i am pretty muscular and i work out a lot i also play a lot of sports i dont know am i fat
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#538 Angelina 2017-07-12 02:33
Hi my names Angelina. I'm 4'11 1/2, I'm 12 years old and I'm 98 pounds. I wanted to know if I'm a good weight/normal.
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#537 Brooklynn 2017-07-11 21:39
["Brooklynn"]I am 12 yrs old and 5'6". I weigh 157 lbs. People say I don't look my weight and I don't think I do either but stepping on a scale makes me feel self conscious. I do have a little bit of rolls and far but it isn't a lot. I look at my self in the mirror and feel awkward because idk how to feel. AM I o overweight?
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#536 Meggie.A 2017-07-09 00:47
Quoting Angelina:
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 !

Hi I'm a 11 year old girl, I am 4'9 or 4'10 and I weigh 97.6 am I healthy? I don't really think it matters how much you weigh or how tall you are, really all that matters is that you eat enough and are active. So if you just enjoy and appreciate your self and be positive it doesn't matter how you look or weigh.
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#535 Janasia Martin 2017-07-07 00:46
Hi I'm a 12 year old girl and I weight 99 pounds I'm 5'2 I feel overweight and sad
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#534 Oliver 2017-06-29 07:56
Oliver Yun Hi, I weigh 75.3 lbs, i'm 12, and i'm 4'9ish. Am I underweight?
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#533 Arnav 2017-06-27 16:09
Hi, I'm 13 year old guy around 5'2, and I'm 99 pounds. Am I overweight? I feel as though I am
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#532 Cher 2017-06-23 09:45
a 12 yr old should weigh 80-90 pounds 80-90 pounds for a 12 yr old is actually considered somewhat underweight. Most 12 years old weigh over 100 pounds.
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#531 Maddie Wigglesworth 2017-06-21 20:25
Hi, I weigh 132, i'm 12, and i'm 5'5. Am I fat?
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#530 Brian 2017-06-17 00:42
I have a 18.3 BMI. I am 11 years old, 5'2, and about 102lbs, is that fat and/or unhealthy?
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#529 carly 2017-06-07 20:19
Quoting Ellie:
Hi! I am thirteen years old, I weigh about 113 and I'm am 5'2. I was wondering if that's overwight for my age? And also some good ways to loose extra leg fat? Thanks!!

Ellie, I am the exact way only 5'3. I sometimes feel fat, but I think that we are young enough that if we really want to loose weight it's gonna be easier for us. No we are not fat, and yes there are million ways to loose weight. Side not: for everyone on this site (me included) I'm gonna say the same crap everyone does. We are beautiful, we are perfect, maybe the things we want to change are for the better. I believe in that. but don't go saying you're fat or chubby. What you should say is I would like to change for the better of me and me myself
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#528 Elyvia 2017-06-04 17:10
i am 13 4'11 and 155 Im very fat and overweight any tips to lose weight fast
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