Boys Height chart in cms for Children 8 years & 11 months old

Height chart for 8 Years 11 Months boys

Tracking height for boys: percentiles, milestones, and what they mean.

Height percentiles for 8 Years 11 Months boys

According to CDC growth chart data, here is how height breaks down for boys at 8 Years 11 Months:

• 5th percentile: 123.0 cm

• 25th percentile: 128.8 cm

• 50th percentile (median): 132.8 cm

• 75th percentile: 137.0 cm

• 95th percentile: 143.1 cm

The percentile values on this page are displayed in cm.

A percentile ranking tells you where your child's measurement falls among boys of the same age. The 50th percentile is the statistical midpoint of the population.

Height and development for boys

At 8 years, height is advancing at a steady rate of approximately 5-6 cm per year in most children. Girls often experience their pubertal growth spurt between ages 9 and 13, while boys tend to begin theirs slightly later, typically between 11 and 16. This means girls at 8 may be noticeably taller than boys of the same age, which is entirely normal and reflects the earlier timing of female puberty.

Annual height tracking

School-age children grow at approximately 5-6 cm per year between ages 5 and 10. The most practical way to track this is to measure height on the same day each year - a birthday makes a memorable reference point. Record the date, measurement, and shoes-off standing position each time for reliable comparison.

Nutrition and growth support

Adequate nutrition, particularly enough total calories and protein, supports healthy height gains. Calcium and vitamin D are especially important for bone development: children aged 4-8 need around 1,000 mg calcium per day, rising to 1,300 mg from age 9-18. Dairy products, fortified non-dairy milks, leafy greens, and tinned fish with bones are good sources.

When to discuss growth with a doctor

Chronic illness, nutritional deficiency, or prolonged psychological stress can impair linear growth. If a school-age child grows less than 4 cm per year or crosses two percentile lines downward over 12 months, discuss it at the next GP visit. Regular check-ups are the best time to review whether growth is on track.

Frequently asked questions

Why is my child shorter or taller than their classmates?

Variation in height between children of the same age reflects differences in genetics, timing of puberty, nutrition, and general health - all of which are entirely normal. Children often go through growth spurts at different times, which can widen apparent differences temporarily before other children catch up.

How much does a child grow per year at this age?

Most school-age children grow approximately 5-6 cm per year between ages 5 and 10. During puberty, the growth rate accelerates to 7-10 cm per year at the peak of the spurt before slowing again. A growth rate below 4 cm per year in a school-age child outside of puberty is worth discussing with a GP.

What is a normal height for this age?

The percentile table on this page shows the full range of typical heights. All values from the 5th to the 95th percentile are considered within normal limits. Height at a single point in time is less informative than a consistent pattern of growth over months and years.

Data sources and methodology

The percentile ranges on this page are drawn from CDC growth chart data from the National Center for Health Statistics and WHO Child Growth Standards (for children under 5). CDC data published May 30, 2000, with 2022 extended BMI tables. Percentiles are modelled using the LMS method (Box-Cox transformation), which accounts for the skewed distribution of measurements at each age. All measurements are given in metric units with imperial equivalents.

Growth charts are screening tools, not diagnostic ones. If you have concerns about your child's measurements, a GP or paediatrician is the right first step.