head circumference percentiles P3–P97, Republic of Korea

Republic of Korea’s published head circumference figures, P3 to P97 month by month, up to 5 years. Boys and girls separately.

boy

Age in years runs along the bottom and head circumference（cm） up the side. The five lines are, from the bottom, the 3rd, 15th, 50th, 85th and 97th percentiles, ranging from 32.1 to 53.5. The full figures are in the table above.

Republic of Korea percentile curves for head circumference, boy.

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yearsmonths

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Republic of Korea · head circumference, boy（cm）
Age	P3	P15	P50	P85	P97
0 months	32.1	33.1	34.5	35.8	36.9
1 months	35.1	36.1	37.3	38.5	39.5
2 months	36.9	37.9	39.1	40.3	41.3
3 months	38.3	39.3	40.5	41.7	42.7
4 months	39.4	40.4	41.6	42.9	43.9
5 months	40.3	41.3	42.6	43.8	44.8
6 months	41.0	42.1	43.3	44.6	45.6
7 months	41.7	42.7	44.0	45.3	46.3
8 months	42.2	43.2	44.5	45.8	46.9
9 months	42.6	43.7	45.0	46.3	47.4
10 months	43.0	44.1	45.4	46.7	47.8
11 months	43.4	44.4	45.8	47.1	48.2
12 months	43.6	44.7	46.1	47.4	48.5
13 months	43.9	45.0	46.3	47.7	48.8
14 months	44.1	45.2	46.6	47.9	49.0
15 months	44.3	45.5	46.8	48.2	49.3
16 months	44.5	45.6	47.0	48.4	49.5
17 months	44.7	45.8	47.2	48.6	49.7
18 months	44.9	46.0	47.4	48.7	49.9
19 months	45.0	46.2	47.5	48.9	50.0
20 months	45.2	46.3	47.7	49.1	50.2
21 months	45.3	46.4	47.8	49.2	50.4
22 months	45.4	46.6	48.0	49.4	50.5
23 months	45.6	46.7	48.1	49.5	50.7
2 years	45.7	46.8	48.3	49.7	50.8
2y 3m	46.0	47.2	48.6	50.0	51.2
2y 6m	46.3	47.5	48.9	50.4	51.6
2y 9m	46.6	47.8	49.2	50.7	51.9
3 years	46.8	48.0	49.5	50.9	52.1
3y 3m	47.0	48.2	49.7	51.2	52.4
3y 6m	47.2	48.4	49.9	51.4	52.6
3y 9m	47.3	48.5	50.1	51.6	52.8
4 years	47.5	48.7	50.2	51.7	53.0
4y 3m	47.6	48.8	50.4	51.9	53.1
4y 6m	47.7	49.0	50.5	52.0	53.3
4y 9m	47.8	49.1	50.6	52.2	53.4
5 years	47.9	49.2	50.7	52.3	53.5

girl

Age in years runs along the bottom and head circumference（cm） up the side. The five lines are, from the bottom, the 3rd, 15th, 50th, 85th and 97th percentiles, ranging from 31.7 to 52.6. The full figures are in the table above.

Republic of Korea percentile curves for head circumference, girl.

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yearsmonths

Download head circumference for every region as CSV

Republic of Korea · head circumference, girl（cm）
Age	P3	P15	P50	P85	P97
0 months	31.7	32.7	33.9	35.1	36.1
1 months	34.3	35.3	36.5	37.8	38.8
2 months	36.0	37.0	38.3	39.5	40.5
3 months	37.2	38.2	39.5	40.8	41.9
4 months	38.2	39.3	40.6	41.9	43.0
5 months	39.0	40.1	41.5	42.8	43.9
6 months	39.7	40.8	42.2	43.5	44.6
7 months	40.4	41.5	42.8	44.2	45.3
8 months	40.9	42.0	43.4	44.7	45.9
9 months	41.3	42.4	43.8	45.2	46.3
10 months	41.7	42.8	44.2	45.6	46.8
11 months	42.0	43.2	44.6	46.0	47.1
12 months	42.3	43.5	44.9	46.3	47.5
13 months	42.6	43.8	45.2	46.6	47.7
14 months	42.9	44.0	45.4	46.8	48.0
15 months	43.1	44.2	45.7	47.1	48.2
16 months	43.3	44.4	45.9	47.3	48.5
17 months	43.5	44.6	46.1	47.5	48.7
18 months	43.6	44.8	46.2	47.7	48.8
19 months	43.8	45.0	46.4	47.8	49.0
20 months	44.0	45.1	46.6	48.0	49.2
21 months	44.1	45.3	46.7	48.2	49.4
22 months	44.3	45.4	46.9	48.3	49.5
23 months	44.4	45.6	47.0	48.5	49.7
2 years	44.6	45.7	47.2	48.6	49.8
2y 3m	44.9	46.1	47.6	49.0	50.2
2y 6m	45.3	46.5	47.9	49.4	50.6
2y 9m	45.6	46.8	48.2	49.7	50.9
3 years	45.9	47.0	48.5	50.0	51.2
3y 3m	46.1	47.3	48.7	50.2	51.4
3y 6m	46.3	47.5	49.0	50.4	51.6
3y 9m	46.5	47.7	49.2	50.6	51.8
4 years	46.7	47.9	49.3	50.8	52.0
4y 3m	46.8	48.0	49.5	51.0	52.2
4y 6m	47.0	48.2	49.6	51.1	52.3
4y 9m	47.1	48.3	49.8	51.3	52.5
5 years	47.2	48.4	49.9	51.4	52.6

About this table

KNGC2017 uses WHO standards from birth to 35 months and Korean data from 3 years. What can be read from it is height and weight for 3–7 years. Its head-circumference series breaks between 72 and 73 months and its BMI series does not agree with its own height and weight, so neither is usable.
At 3 years, height and weight switch from WHO to Korean data, and the z-score steps up slightly because the Korean median is a little higher. That is the seam between two tables, not a change in growth.