Height and Weight Percentile Calculator
Compare your height and weight against population reference data from the World Health Organization and the Centers for Disease Control and Prevention. The tool covers babies, toddlers, children, and adults. Enter your age, sex, height, and weight to get your height percentile and weight percentile instantly.
For informational use only. Consult a pediatrician or healthcare provider for clinical growth assessments.
Calculate Your Height and Weight Percentile
For informational purposes only. Consult a healthcare provider
for clinical growth assessment. Based on WHO & CDC data.
What Does Height and Weight Percentile Mean?
A growth percentile shows how one person's measurement compares to a reference group of the same age and sex. The World Health Organization defines the 50th percentile as the median: exactly half the reference population falls above it and half falls below.
Percentile does not mean percentage of a maximum. A child at the 90th percentile for height is taller than 90 out of 100 children of the same age and sex in the reference group. It says nothing about how tall they can grow.
Two reference points that clarify the scale:
A low result on the percentile height calculator does not mean something is wrong. A high result does not flag a problem. What matters is the pattern across multiple measurements over time, not a single number in isolation.
Interactive Illustration
Height Distribution by Percentile
Hover any percentile marker to highlight that range. The purple dot shows a sample score at the 72th percentile.
Hover a percentile marker on the curve to see what it means.
The 50th percentile is the median. Half the population falls above, half below. Being at the 5th or 95th percentile is not abnormal — it simply describes position within the distribution. Based on WHO & CDC reference data.
How the Height and Weight Percentile Calculator Works
Enter age, sex, height, and weight
Match inputs to CDC or WHO reference dataset
Calculate percentile rank using age- and sex-matched curves
Display numeric percentile and plain-language result
Reference Data Guide
Which growth chart does this calculator use?
Age range → data source
WHO Child Growth Standards
Birth to 24 months · Length measured lying down
CDC Growth Charts
Ages 2–20 · Standing height · US population data
WHO Standards
Birth to 24 months (boys)
CDC Growth Charts
Ages 2–20 (boys)
Why two sources? WHO standards were built from children raised in optimal conditions across six countries, making them an international reference for early growth. CDC charts are based on US population data and are standard in American clinical practice for children aged 2 and above. This calculator switches automatically between them based on the age entered.
Height Percentile Calculator by Age Group
Growth patterns shift at different life stages. The tool adjusts its reference data based on whether you calculate for a baby, a school-age child, or an adult.
WHO Child Growth Standards
CDC Growth Charts
NHANES Population Data
Sex-specific reference curves
Height Percentile Calculator for Babies and Infants
The infant height weight percentile calculator uses WHO Growth Standards for children in the first two years of life. WHO built this dataset from data collected across six countries to create an international reference. The baby height percentile calculator tracks length measured lying down, not standing height. Infants gain several centimeters in a single month during this period, so small percentile shifts between visits are normal.
The infant height percentile calculator produces the most useful information when you run it across multiple well-baby visits rather than as a one-time check.
Height Percentile Calculator for Toddlers and Kids
From age 2 through adolescence, the child height weight percentile calculator draws on CDC growth chart reference data. Growth in this phase is steadier than in infancy but follows clear age-specific patterns. The child height percentile calculator accounts for age in months rather than years to keep results accurate for children who fall between birthdays.
Parents often run the height and weight percentile calculator for kids before annual checkups to understand what the numbers mean before meeting the pediatrician. The tool does not replace a clinical assessment.
Height Percentile Calculator for Boys and Girls
Boys and girls follow separate growth curves, especially after age 8. Girls typically begin their growth spurt around ages 10 to 11. Boys tend to peak between ages 12 and 14. The height percentile girl calculator and the height percentile calculator for boys each reference sex-specific datasets from the CDC.
Entering the correct sex is the single most important input for an accurate result. A girl measured against a male growth chart would show a meaningfully different percentile than her correct female result. The calculator applies the right curve automatically.
Height Percentile Calculator for Adults
Adults do not grow, so the adult height percentile calculator compares your height against a fixed population distribution rather than an age-adjusted growth curve. Reference data for adults comes from national health surveys including NHANES. The height percentile calculator for adults is a straightforward population comparison: you are either taller or shorter than a given percentage of adults of the same sex.
The adult male height percentile calculator uses male-specific distributions because adult male and female height distributions are distinct. A result at the 50th percentile on the US adult male height percentile calculator corresponds to approximately 5 feet 9 inches (175 cm).
US Height Percentile Calculator
The US height percentile calculator draws on growth data published by the Centers for Disease Control and Prevention. CDC growth charts cover children and adolescents aged 2 to 20 and come from nationally representative US population data collected across multiple survey cycles.
For US adults, the calculator uses height distributions from the National Health and Nutrition Examination Survey (NHANES). NHANES provides the reference population for all adult percentile comparisons in this tool.
How to Interpret Your Height Percentile Result
A single percentile height calculator result is a snapshot, not a diagnosis. Use this table to read your result:
| Percentile range | Interpretation | What it suggests |
|---|---|---|
| 90 to 100 | Very tall compared to peers | Well above average for age and sex |
| 75 to 90 | Above average | Taller than most peers |
| 25 to 75 | Average height range | Normal and expected for most people |
| 10 to 25 | Below average | Shorter than most, within normal variation |
| Below 10 | Significantly shorter than peers | Worth discussing with a healthcare provider |
Falling below the 10th percentile is worth noting. Family height history, birth weight, and rate of change across multiple visits all factor into what a clinician considers meaningful. A consistent trend along the same band is more informative than any single percentile result.
Example Height Percentile Calculation
Here is how the percentile height calculator works through a real example:
Input Parameters
Calculated Data
This child sits one centimeter above the median for a 10-year-old boy. A result of 55 on the height percentile calculator places him in the average range, above 55 out of 100 peers. If this result stays near the same band at the next checkup, it confirms steady, consistent growth along a normal trajectory.
Visual Result · Example Calculation
Age 10, Male, 138 cm → 55th Percentile
Percentile Scale — Where 55 sits
Average Range (25th–75th)
This child is taller than 55 out of 100 boys aged 10. Sits comfortably within the normal growth band.
CDC Growth Chart — Boys (ages 2–20)
Based on CDC clinical growth charts (2000). The shaded green band represents the average range (25th–75th percentile). A dot within this band indicates consistent, healthy growth.
Why Height Percentiles Are Used in Pediatric Growth Monitoring
The World Health Organization and the Centers for Disease Control and Prevention both recommend tracking height and weight percentiles across multiple visits as a core part of pediatric care. A single measurement shows where a child stands today. A series of measurements shows whether they grow as expected.
Consistent tracking across checkups helps identify three specific patterns:
- Growth faltering, where a child's percentile drops significantly between visits
- Early signs of hormonal or nutritional conditions that affect child development
- Whether a child recovers well after illness or low birth weight
Use the Percentile Calculator
Enter your age, height, and weight to calculate your result based on WHO & CDC reference data instantly.
Frequently Asked Questions
Scientific insights into your development
There is no single good percentile. The average range on a height percentile calculator runs from the 25th to the 75th percentile, and most people fall somewhere in this band. What matters more is whether your percentile stays consistent over time and fits your family's typical height pattern.
A percentile height calculator is as accurate as the measurements you enter. The reference data behind the tool comes from large, nationally representative datasets from the CDC and WHO. Accuracy improves when you enter age in months rather than years for children, and when height is measured without shoes, standing straight for older children and lying flat for infants.
Yes. The adult height percentile calculator compares your height to a population distribution rather than a growth chart. The height percentile calculator for adults uses NHANES survey data to place your height within the distribution for people of the same sex. The height percentile calculator for men uses male-specific data, giving a precise comparison against the adult male population.
Yes. The height percentile girl calculator and the height percentile calculator for boys each use separate CDC reference curves because male and female growth patterns diverge after early childhood. Girls grow faster in early adolescence and boys catch up later. Entering the wrong sex produces a meaningfully inaccurate result.
WHO Child Growth Standards cover ages 0 to 2 and are based on data from six countries, designed as an international reference for optimal growth. CDC growth charts cover ages 2 to 20 and are built from US population data, making them the standard reference for clinical use in the United States. This calculator uses WHO data for infants and CDC data from age 2 onward.