Sources & methods.

A useful comparison starts with a clearly defined measurement. This page records the values, reference populations and artwork used across HeightPair.

How the comparison scale works

Height values are stored in millimeters. Every subject uses the same linear scale and reference baseline. Changing the display unit preserves those values. Height is measured vertically. Body length, width and wingspan retain the calibrated axis and endpoints of the source artwork. A horizontal bracket marks horizontal measurements. Shoulder height is marked below the highest part of the animal.

Human silhouettes show generic proportions. User images are scaled between the trimmed image's upper and lower edges. The user supplies the height and is responsible for a suitable upright, full-body image.

The body model

The continuous human mesh derives from MakeHuman Community core assets released under CC0. The retained source is pinned to a specific upstream Git revision. The model includes head, hands and feet, with separate base shapes and measurement-driven deformations.

Body height is floor to crown. Chest, waist and hip readouts measure closed horizontal contours on the deformed torso, excluding arms. Inseam uses the crotch landmark to the floor. Local adjustments change the resulting mesh measurements, which are displayed below the viewer.

The viewer fits geometric section targets within its supported range. The preview illustrates proportions. Human anatomy, tissue distribution and garment fit involve additional information.

MakeHuman asset license · Retained model notice

Height percentile data

Children and teenagers

The WHO 2007 height-for-age reference covers ages 61–228 months. Published monthly LMS parameters provide the reference distribution. Fractional ages linearly interpolate adjacent monthly coefficients, then calculate a z-score and a normal-distribution percentile.

WHO 2007 growth reference

Adults

Adult height quantiles come from CDC/NCHS, Anthropometric Reference Data for Children and Adults, United States, August 2021–August 2023, Table 7. The calculator uses the published age and sex groups and interpolates between available weighted percentile points.

Heights outside the published quantile range display a boundary such as “Below 5th.” The oldest adult groups have fewer published upper-tail quantiles, which the result preserves. This reference describes the measured US population during that survey period.

CDC/NCHS original report, Table 7

Reference library

Selected examples represent a particular specimen, design or reference value. Natural variation and reconstructed anatomy are stated in the source records. The library retains calibrated artwork and measurement records from the Bigger vs project.

The stated dimension follows its source definition. Other dimensions follow the retained illustration's proportions and view. Natural examples vary, and fossil outlines reflect reconstructed anatomy.

Brand illustrations

The editorial sculpture images and social sharing artwork were made for this project with generative image tools. They illustrate the product's visual direction. Interactive measurements use the separately calibrated SVG and 3D geometry described above.

DM Sans and Barlow Semi Condensed are self-hosted under their SIL Open Font Licenses. Original source assets and detailed build provenance are retained with the project.

Updated November 14, 2026.