Child Growth Percentile Calculator (WHO)

Enter age in months, gender, height in cm and weight in kg to see where a 0–5 year-old child falls on WHO weight-for-age, height-for-age and BMI-for-age percentiles — P3/P15/P50/P85/P97 bands are shown with a plain-language note; the tool interpolates between WHO reference points.

Age (months)

Gender

Height

Weight

Result

The child’s percentile bands will appear here.

Percentile bands & measuring guide

	P3 / P15 / P50 / P85 / P97
below P3 — low	< P3
P3–P15 — below average	P3–P15
P15–P85 — normal range	P15–P85
P85–P97 — above average	P85–P97
above P97 — high	> P97

Measure at the same time of day, on a flat hard surface; for under-2s use recumbent length, for older children standing height; without shoes and heavy clothes.

Approximate WHO 2006 reference values (boys slightly higher than girls at the same age); values between table points are linearly interpolated.

For self-reference only. This is not a medical diagnosis — growth concerns should be discussed with a paediatrician.

Recent Records

No records yet

0–5y Normal Growth Reference (WHO P3–P97)

Age	Length/Height (cm)	Weight (kg)	BMI
0 mo	46.1–54.0	2.5–4.4	12.6–15.4
1 mo	50.0–57.7	3.3–5.6	13.5–16.5
2 mo	53.8–61.3	4.2–6.8	14.4–17.6
3 mo	57.7–65.0	5.0–8.0	15.3–18.7
4 mo	59.7–67.2	5.5–8.6	15.5–19.0
5 mo	61.7–69.4	5.9–9.2	15.6–19.2
6 mo	63.7–71.6	6.4–9.8	15.8–19.5
7 mo	65.0–73.2	6.7–10.2	15.7–19.5
8 mo	66.2–74.9	6.9–10.5	15.7–19.5
9 mo	67.5–76.5	7.2–10.9	15.6–19.5
10 mo	68.7–77.8	7.4–11.2	15.5–19.5
11 mo	69.8–79.2	7.5–11.6	15.4–19.4
12 mo	71.0–80.5	7.7–11.9	15.3–19.4
13 mo	72.0–81.7	7.9–12.2	15.2–19.4
14 mo	73.1–82.8	8.0–12.5	15.1–19.3
15 mo	74.1–84.0	8.2–12.8	15.0–19.3
16 mo	75.0–85.1	8.3–13.1	14.9–19.3
17 mo	76.0–86.2	8.5–13.3	14.8–19.3
18 mo	76.9–87.3	8.6–13.6	14.7–19.3
19 mo	77.8–88.3	8.7–13.8	14.6–19.4
20 mo	78.6–89.4	8.8–14.1	14.6–19.4
21 mo	79.5–90.4	8.9–14.3	14.5–19.5
22 mo	80.2–91.3	9.0–14.7	14.4–19.6
23 mo	81.0–92.2	9.1–15.1	14.4–19.8
24 mo	81.7–93.1	9.2–15.5	14.3–19.9
25 mo	82.5–94.0	9.3–15.8	14.3–20.0
26 mo	83.3–94.9	9.5–16.0	14.3–20.1
27 mo	84.2–95.8	9.6–16.3	14.3–20.3
28 mo	85.0–96.6	9.7–16.5	14.2–20.4
29 mo	85.8–97.5	9.9–16.8	14.2–20.5
30 mo	86.6–98.4	10.0–17.0	14.2–20.6
31 mo	87.2–99.2	10.1–17.3	14.2–20.8
32 mo	87.7–100.0	10.3–17.6	14.2–21.0
33 mo	88.3–100.8	10.4–17.9	14.2–21.2
34 mo	88.9–101.5	10.5–18.3	14.2–21.4
35 mo	89.4–102.3	10.7–18.6	14.2–21.6
36 mo	90.0–103.1	10.8–18.9	14.2–21.8
37 mo	90.5–103.8	10.9–19.2	14.2–22.0
38 mo	91.1–104.6	11.0–19.5	14.2–22.2
39 mo	91.7–105.3	11.2–19.8	14.2–22.4
40 mo	92.2–106.0	11.3–20.1	14.2–22.6
41 mo	92.8–106.8	11.4–20.4	14.2–22.8
42 mo	93.3–107.5	11.5–20.7	14.2–23.0
43 mo	93.8–108.2	11.6–21.0	14.2–23.2
44 mo	94.3–108.9	11.7–21.3	14.3–23.4
45 mo	94.8–109.5	11.8–21.5	14.3–23.6
46 mo	95.3–110.2	12.0–21.8	14.3–23.9
47 mo	95.8–110.9	12.1–22.1	14.4–24.1
48 mo	96.3–111.6	12.2–22.4	14.4–24.3
49 mo	96.8–112.2	12.3–22.7	14.4–24.5
50 mo	97.2–112.8	12.5–23.0	14.4–24.7
51 mo	97.7–113.4	12.6–23.3	14.4–25.0
52 mo	98.2–114.1	12.7–23.6	14.5–25.2
53 mo	98.6–114.7	12.9–23.9	14.5–25.4
54 mo	99.1–115.3	13.0–24.2	14.5–25.6
55 mo	99.5–115.9	13.1–24.5	14.5–25.8
56 mo	99.9–116.5	13.3–24.8	14.6–26.0
57 mo	100.3–117.2	13.4–25.1	14.6–26.3
58 mo	100.8–117.8	13.5–25.4	14.6–26.5
59 mo	101.2–118.4	13.7–25.7	14.7–26.7
60 mo	101.6–119.0	13.8–26.0	14.7–26.9

Normal range = WHO growth standards P3–P97 (about -1.88 SD to +1.88 SD). Months between reference points are linearly interpolated, so values are approximate. BMI ranges shift with age and are for reference only — not a diagnosis.

What is it

Growth percentiles compare a child with a reference population of the same age and sex: P50 is the median, P3 means only 3% of children that age are smaller, and P97 means only 3% are larger. Tracking several measurements over time shows whether a child follows a steady curve.

Notes & fun facts

Parents who worry their toddler is “too small” can watch the percentile line month by month: a child who stays around P40 on a steady curve is usually developing well, even if they are not above average.

Origin & history

Child growth reference charts took a century to refine: early standards drew mostly on single-country, formula-fed samples. In 2006 the WHO released new child growth standards built on long-term data from healthy, breastfed children in multiple countries, which have since become the worldwide reference for pediatric height, weight and percentile assessment.