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Height Comparison Calculator

See where your height ranks among people your age — your height percentile, computed from WHO height-for-age data, right here in your browser.

Sex

Boy / Male Girl / Female

Age

Units

ft / in cm

Your height

Your percentile appears here — nothing you enter leaves your browser.

WHO reference data

Average height by age

Median (50th percentile) heights from the WHO Child Growth Standards (2–5 years) and WHO Growth Reference (5–19 years) — the same data the calculator above uses, laid out as a height chart by age for boys and girls.

Boys — average height by age

Age	Average height	ft / in
2 years	87.1 cm	2'10"
3 years	96.1 cm	3'2"
4 years	103.3 cm	3'5"
5 years	110.0 cm	3'7"
6 years	116.0 cm	3'10"
7 years	121.7 cm	4'0"
8 years	127.3 cm	4'2"
9 years	132.6 cm	4'4"
10 years	137.8 cm	4'6"
11 years	143.1 cm	4'8"
12 years	149.1 cm	4'11"
13 years	156.0 cm	5'1"
14 years	163.2 cm	5'4"
15 years	169.0 cm	5'7"
16 years	172.0 cm	5'8"
17 years	173.4 cm	5'8"
18 years	174.5 cm	5'9"
19 years	176.1 cm	5'9"

Girls — average height by age

Age	Average height	ft / in
2 years	85.7 cm	2'10"
3 years	95.1 cm	3'1"
4 years	102.7 cm	3'4"
5 years	109.4 cm	3'7"
6 years	115.1 cm	3'9"
7 years	120.8 cm	4'0"
8 years	126.6 cm	4'2"
9 years	132.5 cm	4'4"
10 years	138.6 cm	4'7"
11 years	145.0 cm	4'9"
12 years	151.2 cm	5'0"
13 years	156.4 cm	5'2"
14 years	159.8 cm	5'3"
15 years	161.7 cm	5'4"
16 years	162.5 cm	5'4"
17 years	162.9 cm	5'4"
18 years	163.1 cm	5'4"
19 years	163.2 cm	5'4"

How the percentile is calculated

Your height is compared against the WHO median height for your exact age and sex (interpolated between the table rows above, so 14 years 6 months isn't treated as 14 flat). The spread of heights at each age is modeled as a normal distribution with a standard deviation of about 4% of the median — a good single-figure approximation of the WHO/CDC height-for-age references across childhood and adolescence.

The result is clamped to the 1st–99th percentile and shown with a "~", because that's what it is: a solid positioning cue, not a clinical growth assessment. If you're worried about growth, a pediatrician measures much more than one data point.

From age 19 the curve is essentially flat, so adults are compared against the 19-year reference values.

Height comparison FAQ

Is this a height percentile calculator?

Yes. It places your height on the WHO height-for-age curve for your age and sex and reads off your approximate percentile — the share of people your age who are shorter than you.

What is the average height for a 14-year-old?

On the WHO growth reference, the median height at 14 is about 5'4" (163.2 cm) for boys and about 5'3" (159.8 cm) for girls. Individual timing varies a lot at this age — see the full tables on this page.

Am I short or tall for my age?

Percentile is the honest way to answer that: the 50th percentile is exactly average, higher means taller than most people your age, lower means shorter than most. Anywhere within a broad band around the middle is completely normal — timing of growth spurts moves people around the curve for years.

How accurate is this comparison?

It uses the WHO median height for your age and sex and a normal approximation of the height-for-age distribution. That's why the result is shown with a "~" — it's a reliable positioning cue, not a clinical growth assessment.

Can adults use this tool?

Yes. From age 19 the reference curve is essentially flat, so adults are compared against the 19-year values — which is how adult height-for-age comparisons are usually done.

Does my height data leave my browser?

No. The percentile is computed locally on this page. Nothing you enter is stored, sent anywhere, or used for tracking.

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