Height Calculator

Convert height units, view population percentile, and estimate child height percentiles

feet / inches

Child Height Percentile (optional)

Enter a child's height and age to estimate their growth percentile

0
Height

About the Height Calculator

This height calculator converts between different height units — feet/inches and centimeters — and provides a simplified population percentile comparison. It can also estimate a child's height percentile based on age, helping parents and caregivers track growth trends. Understanding height distribution can be useful for medical assessments, clothing sizing, and general curiosity about where one stands relative to the broader population.

The Formula

1 inch = 2.54 cm  |  1 foot = 30.48 cm  |  Percentile based on CDC/NCHS growth reference data

Frequently Asked Questions

How is the population percentile estimated?

The percentile estimate uses a simplified model based on published CDC height distribution data for adults (separate by general population averages). For children, it references WHO growth standards by age. The calculator provides an approximate percentile, not a clinical diagnosis.

What is the average height for men and women in the US?

According to CDC data, the average adult male height in the US is approximately 5 ft 9 in (175 cm) and the average adult female height is approximately 5 ft 4 in (163 cm). These averages vary by age, ethnicity, and geographic region.