Calculating BMI for children

General

Is your child too heavy, or maybe too light? Find out here with the useful BMI calculator for children! Read the standard value in the tables below and compare this with your child’s BMI.

The BMI of children is calculated in the same way as that of adults. However, the result is interpreted differently. At a young age, many girls have a higher BMI than boys. Therefore, there are two different tables.

Content

The test consists of the following components:

Setting box (if necessary)
Measuring times

Procedure

Write down your body weight and height. Then implement the following calculation to calculate your BMI:

BMI = body weight / height2

Body weight is entered in kilograms. Height is entered in meters.

Example

An example follows below:

For someone who weighs 82 kg and is 1.96 meters, the BMI calculation is as follows:

82 / 1.96² = 21,5 BMI

Steps

Weigh yourself on a scale and write down this number (in kilograms)
Measure yourself and write down this number (in meters)
Carry out the following calculation:

BMI = body weight / (body height * body height)

Results

Boys

Age	Seriously underweight	Underweight	Healthy weight	Overweight	Seriously overweight
2	<13,36	13,37-15,13	15,14-18,40	18,41-20,09	<20,09
3	<13,09	13,10-14,73	14,74-17,88	17,89-19,57	<19,57
4	<12,86	12,87-14,42	14,43-17,54	17,55-19,29	<19,29
5	<12,66	12,67-14,20	14,21-17,41	17,42-19,30	<19,30
6	<12,50	12,51-14,06	14,07-17,54	17,55-19,78	<19,78
7	<12,42	12,43-14,03	14,04-17,91	17,92-20,63	<20,63
8	<12,42	12,43-14,14	14,15-18,43	18,44-21,60	<21,60
9	<12,50	12,51-14,34	14,44-19,09	19,10-22,77	<22,77
10	<12,66	12,67-14,63	14,64-19,83	19,84-24,00	<24,00
11	<12,89	12,90-14,96	14,97-20,54	20,55-25,10	<25,10
12	<13,18	13,19-15,34	15,35-21,21	21,22-26,02	<26,02
13	<13,59	13,60-15,83	15,84-21,90	21,91-26,84	<26,84
14	<14,09	14,10-16,40	16,41-22,61	22,62-27,63	<27,63
15	<14,60	14,61-16,97	16,98-23,28	23,29-28,30	<28,30
16	<15,12	15,13-17,53	17,54-23,89	23,90-28,88	<28,88
17	<15,60	15,61-18,04	18,05-24,45	24,46-29,41	<29,41
18	<16,00	16,01-18,49	18,50-24,99	25,00-30,00	<30,00

Girls

Age	Seriously underweight	Underweight	Healthy weight	Overweight	Seriously overweight
2	<13,24	13,25-14,82	14,83-18,01	18,02-19,81	>19,81
3	<12,98	12,99-14,46	14,47-17,55	17,56-19,36	>19,36
4	<12,73	12,74-14,18	14,19-17,27	17,28-19,15	>19,15
5	<12,50	12,51-13,93	13,94-17,14	17,15-19,17	>19,17
6	<12,32	12,33-13,81	13,82-17,33	17,34-19,65	>19,65
7	<12,26	12,27-13,85	13,86-17,74	17,75-20,51	>20,51
8	<12,31	12,32-14,01	14,02-18,34	18,35-21,57	>21,57
9	<12,44	12,45-14,27	14,28-19,06	19,07-22,81	>22,81
10	<12,64	12,65-14,60	14,61-19,85	19,86-24,11	>24,11
11	<12,95	12,96-15,04	15,05-20,73	20,74-25,42	>25,42
12	<13,39	13,40-15,61	15,62-21,67	21,68-26,67	>26,67
13	<13,92	13,93-16,25	16,26-22,57	22,58-27,76	>27,76
14	<14,48	14,49-16,87	16,88-23,33	23,34-28,57	>28,57
15	<15,01	15,02-17,44	17,45-23,93	23,94-29,11	>29,11
16	<15,46	15,47-17,90	17,91-24,36	24,37-29,43	>29,43
17	<15,78	15,79-18,24	18,25-24,69	24,70-29,69	>29,69
18	<15,99	16,00-18,49	18,50-24,99	25,00-30,00	>30,00

Required equipment

For this test you need the following:

Sit and Reach Box

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