Body Composition and Anthropometrics

Height Calculator

Child adult-height prediction from mid-parental height.

Peer-reviewed methodology • 100% Private Client Calculation • Scientific Review: Nutrition Planner Editorial Team • Version 4.0.0

Input Parameters

Real-time physiological calculation

Real-Time Engine
178.5 cm (5.9 ft)
Predicted adult height
estimated
Realistic range: 170 to 187 cm (±8.5 cm)

The mid-parental method predicts adult height within roughly ±8.5 cm for most children; genetics, nutrition and health during growth all influence the final number.

Method, inputs, and confidence

Formula Method: Mid-parental height: average of parents’ heights, +6.5 cm for boys / −6.5 cm for girls.

Confidence: Population-average prediction with a wide individual range

Result computed by the Height Calculator - Nutrition Planner calculation engine.

Clinical Methodology and Formulas

Calibrated against peer-reviewed metabolic literature and international clinical standards.

Mid-parental height prediction v1.0.0

Predicted adult height = (father + mother height)/2 ± 6.5 cm by sex, range ±8.5 cm.

Target Cohort
Children (growth prediction)
Assumptions
No growth disorders
Limitations
±8.5 cm prediction interval
Output Units
cm
Last Verified
2026-06-01

Peer-Reviewed Literature and Clinical Guidelines

  • World Health Organization. WHO Child Growth Standards: length/height-for-age, weight-for-age, head circumference-for-age (LMS). WHO Multicentre Growth Reference Study, 2006. View Publication
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Evidence-Based Educational Guide

Where Does Your Height Stand on National Growth Curves?

This calculator evaluates child, adolescent, and adult stature against Centers for Disease Control and Prevention (CDC) and World Health Organization height-for-age growth benchmarks. It determines your exact height percentile.

What This Metric Means in Everyday Life

Height is one of the most visible physical traits, heavily influenced by parental genetics (accounting for about 80 percent of height variance) alongside childhood nutrition and overall health. This tool shows what percentage of people of your age and sex are shorter or taller than you.

How the Calculation Works

The tool maps your measured stature against age-stratified epidemiological datasets. For children and teenagers from age 2 to 20, it uses CDC growth charts. For adults, it references national health survey data to show your permanent adult percentile.

Translating Your Numbers into Action

If your height percentile is 65 percent, you are taller than 65 out of 100 people of your age and biological sex, while 35 are taller than you. For growing children, steady progression along a percentile line indicates healthy skeletal development.

Practical Everyday Tips

  • Measure height without shoes, standing straight with heels, glutes, and upper back touching a flat wall.
  • Support growing children with adequate protein, calcium, vitamin D, and at least 9 to 11 hours of quality sleep.
  • Remember that growth spurts occur at different ages; late bloomers often catch up significantly during puberty.
  • Check growth charts if a child stops growing taller for more than six months.

Common Mistakes to Avoid

  • Assuming adult height can be significantly altered after growth plates fuse in late adolescence.
  • Comparing height between boys and girls at the same age during early puberty, when girls often experience earlier growth spurts.
  • Measuring height on carpeted floors or while slouching.
Search Questions Answered

Frequently Asked Questions

What is the average height for adult men and women in the United States?

According to the CDC, the average height for adult American men is approximately 5 feet 9 inches (175 cm). The average height for adult American women is approximately 5 feet 4 inches (162 cm).

At what age do growth plates close and growth stops?

For girls, growth plates typically fuse between ages 14 and 16, usually about two years after their first period. For boys, growth plates usually close between ages 16 and 19.

How do doctors predict a child adult height?

The most common clinical method is the Mid-Parental Height calculation. For boys: add 5 inches to the mother height, average it with the father height. For girls: subtract 5 inches from the father height, average it with the mother height.

Can stretching or hanging make you permanently taller?

No. While stretching can decompress spinal discs temporarily by a quarter inch throughout the day, it does not stimulate bone elongation once growth plates have fused.

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