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.

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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.



#1191 Gonzalo 2021-05-15 23:00
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#1190 Richard 2021-05-14 16:31
Hello I’m 11 and I weight 80-82 is that healthy I’m 5’1
#1189 lea 2021-05-14 06:32
hi im 10 , ll in July and im 110 pounds and im 5'1 is that overweight
#1188 Summer Hutchinson 2021-05-13 11:55
Since you are 13 ur height is avarge but you are underweight
#1187 Cass 2021-05-12 23:30
I am 5’6 1/2, female with a weight of 72lbs and I have a bit of an eating disorder
#1186 Maggie 2021-05-12 00:42
hi I am 13 and a half I weigh 86-89 pounds and I am 5’4 is that heathy or do I need to lose weight please reply.
#1185 Melina 2021-05-11 19:30
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#1184 Dulce 2021-05-10 17:32
I’m 16, weigh 118 and I’m 4’10 so should I lose weight?
#1183 Sophie 2021-05-10 16:52
Hi I am female, 5’8 and 12. I weigh 140 pounds. I feel overweight because I have thick thighs. Am I okay?
#1182 Nalonny W 2021-05-10 16:03
Hi, Im Nalonny im 11 years old-5'3 and weigh 118 i have since lost weight from the past 7 months i used to weigh 125. =C
#1181 Ruby 2021-05-10 06:20
I’m 13 ‘5”1 and 135 is that Heathy?
#1180 Kayla 2021-05-08 21:17
Hey, I am 14 and I weight around 110-115 my height is 5’2 exactly and I am wanting to know if I am overweight or not. All of my friends say that I am not skinny but I wish that I was.. can I know if I am a healthy weight? If not are there some good and healthy ways to loose weight? I don’t feel good about myself
#1179 Sophia Rico 2021-05-08 17:48
I am 10 years old and 130 pounds and I am 5'2 is that healthy? I did chloe ting's workout for a week and only lost 1 pound but I gain it back because i gain weight fast and I had a ED back then and I only ate 1 or 2 meals a day and I was still 108 and i was 4'10 my whole life i have been overweight when I was in 3rd grade my friend asked me how much do I weigh I told her 70 she said WHAT she was i weigh 64 so she was overweight to I think but is now like 40 pounds she is really skinny because her dad doesn't feed her and I wanna tell her to call child abuse services her parents are divorced and her mom lost custody of her her dad hits her and her 2 brothers but anyways yeah.
#1178 Sarah Hill 2021-05-07 17:19
Hello I´m Sarah and I am 13 year old
(5´2) (108 pounds) with EDS. Moving around is very hard for me so Im trying to work out and lose weight so in future I wont be overweight. To lose weight I dance. If you are trying to lose weight I suggest burning 600 calories a day and getting 7-8 (or more) hours of sleep and you maybe will lose two pounds in one week. Losing weight takes time so dont starve yourself it wont help trust me. I hope this helps anyone trying to lose weight.
#1177 Sarah Hill 2021-05-07 17:02
Quoting Addy:
I am 13 5’2 and 180 pounds so I would like to know what I should do to lose weight

Losing weight takes time. Try looking up work outs and try to burn at least 600 calories a day and get 7-8 or more hours of sleep and you should lose two pounds a week. Remember just dont give up. Hope this helps.
#1176 Sarah Hill 2021-05-07 16:58
Quoting Anne Onymous:
I’m twelve 5’6 and 105 pounds is that healthy ??

Yes that is healthy for your age and height
#1175 Anne Onymous 2021-05-07 01:23
I’m twelve 5’6 and 105 pounds is that healthy ??
#1174 Lani 2021-05-06 23:33
Quoting abigail:
im 11 and weigh 158 is that overweight
How tall are you?
#1173 itha 2021-05-06 01:49
Quoting yanni:
Hey! I am 12y/o and I'll be turning 13 in July. I am 5'3" and I weigh 105.4 pounds. My BMI calculator says that I am at a healthy weight, but I'm still concerned. Please someone respond and be honest.. Also remember that confidence is beautiful, no matter your size, no matter your weight, be confident in who you are and you will be beautiful.

You are at a healthy weight! Please do not try to lose weight right now, I'm sure you are beautiful just as you are
#1172 Lani 2021-05-05 20:48
I am 11.5 years old and 150 lbs I am also 5’7 1/2 am I overweight?
#1171 Jillian 2021-05-05 00:18
My partner is attempting to keep me away from the internet as she is convinced I spend far too
much time on it. However, I actually enjoy filling my mind with as much information that I get
my hands on. I also like to spend some time to say thanks to people if they have taken some time to help me, which explains why I am commenting now.
Many thanks for this useful information.

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#1170 Addy 2021-05-04 14:08
I am 13 5’2 and 180 pounds so I would like to know what I should do to lose weight
#1169 Hi 2021-05-03 19:32
hi, I’m 11 turning 12 in October I weigh 115 pounds and in 5”2 is that healthy?
#1168 doctor 2021-05-03 18:08
Quoting anonymous:
hi, i'm 11 turning 12 this october and im 5'2 weighing 97 pounds. is that healthy?
if your a male you should be around 89-135 and if your a girl you should weigh 85-132

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