Introduction
This height percentile calculator shows you how your height compares to other people of the same age and sex. Enter your height, age, and biological sex, and the tool instantly tells you what percent of people you are taller than. It uses data from the WHO, CDC, and national surveys to give you accurate results for children, teens, and adults.
Your result includes a percentile ranking, a Z-score, a bell curve chart, and a step-by-step breakdown of how the math works. You can compare against populations from over 100 countries. Whether you want to check your child's growth with our baby percentile calculator or see where you stand among adults, this calculator makes it quick and simple.
How to Use Our Height Percentile Calculator
Enter a few details about yourself below, and the calculator will show your height percentile, Z-score, and how you compare to others in your age and sex group.
Biological Sex: Pick either Male or Female. Each sex has its own height data, so this helps the tool give you an accurate result.
Age: Choose your age in years from the dropdown. If you are entering data for a baby or young child, you can also add months and days for a more precise result.
Height: Switch between Imperial (feet and inches) or Metric (cm or m), then type in your height. The tool will convert it for you automatically.
Compare Against Population: Pick the country you want to compare yourself to. You can type in the search box to find a country fast. For babies (0–24 months), WHO world data is used. For kids aged 2–17, U.S. CDC data is used.
Reference Average Height & Standard Deviation: These fields auto-fill based on the country and age you pick. They show the average height and spread for that group. You can edit them if you have your own data.
Calculate & Reset: Click Calculate to see your results. Click Reset to clear all fields and start over.
What Is a Height Percentile?
A height percentile tells you how your height compares to other people of the same sex and age. If you are in the 75th percentile, that means you are taller than 75 out of every 100 people in your group. If you are in the 25th percentile, 75 out of 100 people are taller than you.
How Height Percentile Is Calculated
This calculator uses a math formula called the Z-score. It measures how far your height is from the average. First, it subtracts the average height from your height. Then it divides that number by the standard deviation, which shows how spread out heights are in a population. A Z-score of 0 means you are exactly average. A positive Z-score means you are taller than average. A negative Z-score means you are shorter than average.
The Z-score is then converted into a percentile using a standard bell curve (also called a normal distribution). Most people fall near the middle of this curve, and fewer people are found at the very tall or very short ends.
Where the Data Comes From
The reference data in this calculator comes from trusted health sources. For babies from birth to 24 months, it uses the WHO Child Growth Standards. For children ages 2 through 17, it uses CDC growth charts based on U.S. data. For adults 18 and older, it uses national survey data from countries around the world.
Why Height Percentile Matters
Doctors use height percentiles to track growth in children and spot potential health issues early. A child who suddenly drops or jumps several percentiles may need a closer look. For adults, knowing your height percentile helps you understand where you stand compared to others in your country or worldwide. It is a simple, useful body metric that puts your height into context.
Important Things to Know
Height depends on many factors, including genetics, nutrition, and overall health. A single percentile number does not tell you whether you are healthy or unhealthy. This calculator gives a statistical comparison, not a medical diagnosis. If you have concerns about your height or your child's growth, talk to a doctor.