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Height Percentile Calculator

Where your height sits against the US adult reference, with the z-score and standard-deviation band.

Related tools

All Weight & body tools →
Child BMI Percentile CalculatorBMI-for-age percentile on the CDC reference, ages 2-20 — the percentile, not the BMI, is what counts for a child.Adult height predictorPredict a child's adult height from the parents' heights.Waist-to-height ratio calculatorCompute your waist-to-height ratio and see the associated health category.Baby Growth Percentile CalculatorWeight, length and head circumference percentiles from the WHO Child Growth Standards, 0-24 months.Am I Overweight? CalculatorFind out if you're overweight from your BMI, with your healthy weight range and kg to reach it.Am I Underweight? CalculatorFind out if you're underweight from your BMI, with your healthy weight range and kg to reach it.Biological Age CalculatorEstimate your biological age from lifestyle factors — fitness, diet, sleep, stress and more. Educational, not medical.Body Frame Size CalculatorSmall, medium or large frame from your height-to-wrist ratio, with a frame-adjusted weight range.

Height Percentile Calculator is free to use as often as you like, directly from this page. Its place is under Weight & body; Child BMI Percentile Calculator and Adult height predictor answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Height Percentile Calculator?

Where your height sits against the US adult reference, with the z-score and standard-deviation band.

When would I actually use this?

Getting a reference point before a check-up, setting a realistic target, and understanding why two people of the same weight can be in very different shape — and, the same act from the other side, putting a day's caffeine, salt, sugar or alcohol beside the ceiling a health body publishes for it.

What is the most common mistake?

Reading BMI as a measure of health. It cannot tell muscle from fat, which is why athletes routinely score as overweight and why it says little about an individual.

How is Height Percentile Calculator different from Child BMI Percentile Calculator?

They sit next to each other but answer different questions: Child BMI Percentile Calculator is the one to open when you need it to bMI-for-age percentile on the CDC reference, ages 2-20 — the percentile, not the BMI, is what counts for a child. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Adult height predictor is the closest one after this: Predict a child's adult height from the parents' heights.

What else is worth having open alongside it?

Waist-to-height ratio calculator and Baby Growth Percentile Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

A US adult height reference (NHANES), ages 20 and over, with height treated as normally distributed. Two limits follow and the tool states both: height distributions differ sharply between countries and generations, so a percentile against this reference is not your percentile at home; and the normal approximation is good near the mean and less reliable at the extremes. Below 20 the tool declines to answer at all — growth is still in progress, and an adult reference would simply be wrong.

Further reading

All guides →
ExplainerWhere a Percentile Comes From: Which Population, Measured WhenA percentile is a rank against a reference population, so the first question is never the arithmetic — it is which population, measured when. The same 5'11" man is the 38th percentile in one national dataset and the 86th in another, and the 91st against a reference of people born a century ago. Here is why, and what a z-score adds.ExplainerHow Tall Will a Child Be? The Arithmetic Is Easy; the Error Bar Is the StoryAverage the parents' heights, shift by a sex constant, and you have a target height. The honest part is what comes next: the published prediction interval is about ±4 inches, wide enough to cover most of the adult population. Here is the formula, the interval, why bone age does better, and why children keep out-growing the target.ExplainerGrowth Percentiles: What a Child's Centile Really MeansA centile ranks a child against a reference population — it is not a grade, and one reading says almost nothing. Here is the LMS arithmetic behind the number, and why the same boy is on the 90th centile on one chart and the 85th on another.ExplainerBaby Growth, and What Crossing Centiles Actually MeansThe WHO infant standard is prescriptive: it was built from healthy breastfed babies and describes how infants should grow. National references describe how they did grow. In the first year the two disagree by enough to move the same baby forty percentile points, with no change in the baby. Here is the size of the gap, and what the published thresholds for concern actually say.ExplainerWaist-to-Hip Ratio Explained: The Thresholds, and Where to Put the TapeWHO puts abdominal obesity at a ratio of 0.90 or more for men and 0.85 or more for women. But measuring in the wrong place changes the answer more than the threshold does — here is exactly where the tape goes.ExplainerAm I Overweight? Why One Number Cannot SayBMI reads muscular bodies as heavy and cannot see where fat sits at all — which is exactly why the waist measures exist. Here are the published waist and waist-to-height thresholds, a worked case where BMI and waist give opposite answers, an honest account of the contested mortality curves, and the 2025 shift toward defining obesity by adiposity and organ function rather than by a ratio.