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.

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. Please note, that BMI is only a very rough predictor for overweight in individuals.

ft' in''



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.


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.


#848 Jenna 2019-01-21 02:37
Hi I’m 23 years old, I’m 5’6 and 105 pounds and I underweight?
#847 Luke 2019-01-21 02:33
Hello, I’m almost 14 years old and I weigh only about 9 pounds . My body wasn’t ment to hold and food or drinks so I have to starve myself. I can’t fit in with the others.
I have had anorexia for my whole life. I’m just a skeleton. I could die any day. I’m always cold even when it’s summer, still it freezing for me. I wish I could gain weight, so I could enjoy the small life that I live. I’m just as thin as paper. I can’t go anywhere, I can’t walk my legs won’t hold me up. I have to use a wheelchair to get around.
#846 Aiden 2019-01-21 02:21
Hi, I’m 11, 4’10 and right around 24 pounds. I’ve suffered from anorexia since I was 8 years old. I can’t seem to get better. I never really ate a lot. I don’t even want to touch a drop of water now. When I was 7 years old I got bullied for being a little bigger than the other kids. I was about 70 pounds.
Especially the really skinny kids bullied me. When I decided I needed to change so I did. Now I have anorexia. I basically live in a hospital i’ve Been in the same hospital room for over 3 years now.
#845 Carson 2019-01-21 02:08
Hello, I’m 15, 5’1 and 48 pounds. I just really am very hungry. Everyone tells me I’m “Too Skinny”, and need to gain weight. I’m really just genuinely really thin.
#844 Noah 2019-01-21 01:59
Hi, I’m 13, 4’8 and 59 pounds. I play baseball almost everyday. Am I underweight? Overweight?
#843 Ana 2019-01-20 15:22
Hi I'm 13 yrs old and im around 5'2. I weigh around 60-70 pounds. Am I healthy?
#842 Emilie Aylward 2019-01-20 01:00
Hi I am a 13 year old girl who is very self conscious about her body. I am 5’3 and I weigh 140 pounds. I dance ballet almost everyday day of the week but my weight just goes up. Is this healthy?
#841 Keeley 2019-01-18 16:11
Hi I’m Keeley, I am 13 I’m 5”9 and I weigh 115. I seem like I weigh a lot but it’s mainly my height. I don’t look heavy and I am pretty skinny. If you don’t love your body, change it no matter what because all that matters is that you are comfortable living in your skin.
#840 lolere 2019-01-18 15:38
I'm 10 yr old girl and I weigh 83 lbs. How do I lose wieght?
#839 lolere 2019-01-18 15:32
Quoting fds:
Lol are you 4'9? Midget bitch go kys faglord

Why are u saying that! Are YOU 4getting that ur prbly doing this cause you are 4'9?
#838 Annie 2019-01-17 13:55
Hi I'm 11 Years Old I'm 4'11 And I Weigh 60 Pounds Am I Healthy?
#837 m 2019-01-17 11:18
hi I am 13 year old and 5ft4in and I weigh 194lbs I feel fat and ugly but I cant diet because my parents work late so we eat out a lot and when I try to exercise I cant because I have 4 little brothers and a job and I can never lose weight because I always gain it back and eating out sometimes make me want to puke because of how often we do it and I've been to plenty dr for my weight and my mom made me go to a mean one but no matter how hard I try I nver get any where
#836 Kraig 2019-01-17 10:50
English to Spanish Legal Translation in USA.

my blog post ... Russian Translation Services Usa:
#835 Kaylin 2019-01-17 02:48
Hi im Kaylin(F) I am 12 years old, 5”0 and i weigh 109 lbs. A am right at the edge of overweight. Should i be worrying anout my wright or am i fine?
#834 veronica 2019-01-16 22:42
I'm 13 and have a height of 5'4. I weigh about 118 pounds. I feel overweight as all the other girls are about 90-100 pounds. Am I really overweight? What should I do?
#833 alex 2019-01-16 02:18
hi I'm Alex and I am 12, 4'7 and I weigh 68 pounds. is it unhealthy?????? ????
#832 sophie piccerillo 2019-01-15 17:18
Quoting jenna prinkey:
Hi im jenna i weigh 244 pounds and im 12
i have tried to go on diets i go to the gym everyday but i just cant loose weight

Hi Jenna, try going on the keto diet, it's a diet that instead of your body burning sugars and carbs it starts to burn fat by you eating foods with high fats and low sugars and carbs
Add comment
Comments can not be used for advertising