What Is a Child Growth Chart?
A child growth chart is a simple way to track how a child is growing. You record the child’s age, height and weight, and the tool calculates the Body Mass Index (BMI). The guidance ranges below give a very rough idea of typical height and weight at different ages — children grow at different rates, and a single reading never tells the whole story.
General Growth Guidance Ranges
These are very rough typical ranges for general reference only. Every child grows differently, and height and weight also depend on family height, nutrition and health.
| Age | Typical Height (approx.) | Typical Weight (approx.) |
|---|---|---|
| 2–5 years | 85–115 cm | 12–20 kg |
| 6–9 years | 115–135 cm | 20–30 kg |
| 10–13 years | 135–160 cm | 30–50 kg |
| 14–16 years | 155–175 cm | 45–65 kg |
This is general information only, not medical advice. Consult a doctor for health concerns.
How to Use It — Step by Step
- Enter the child’s age in years (2 to 16).
- Enter the height in centimetres and the weight in kilograms.
- Press Check Growth. The BMI appears instantly and is also checked on the server.
- Compare the height and weight with the general guidance ranges above — and remember that steady growth over time matters more than any single reading.
Worked Example
A child aged 8 years, height 128 cm (1.28 m) and weight 26 kg has a BMI of 26 ÷ (1.28 × 1.28) = 15.9, which is below the general adult healthy BMI band of 18.5–24.9. That alone does not mean there is a problem — children’s BMI is judged on age- and sex-specific charts, so a doctor’s check is the right next step if you are concerned.
FAQs
What is BMI?
BMI (Body Mass Index) is weight in kilograms divided by height in metres squared. It is a rough screening number, not a diagnosis.
Can I use adult BMI bands for my child?
No — adult BMI bands are only a general reference. Doctors assess children using age- and sex-specific growth charts, so always ask a doctor if you are worried about growth.
How often should I check my child’s growth?
Many parents check height and weight every few months and note the trend. If growth seems to slow down or change suddenly, consult a doctor.
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