Height Data Methodology
Accurate height data is the foundation of Heights By Side. This page explains exactly how we find, verify and maintain the height figures that power our comparisons.
Primary sources
Every height in our database is researched from at least one, and wherever possible two or more, independent primary sources:
- Official sports databases — NBA, FIFA, World Athletics, and equivalent governing bodies publish official player measurements used for registration and competition
- Published biographies and encyclopedias — authoritative reference works that cite measured heights
- Medical and scientific literature — for animal species, zoological and biological field guides
- Architectural and engineering records — for buildings, structures and objects, using official construction or design specifications
- Published interviews and official profiles — where a subject has stated or confirmed their own height in a verifiable public record
- Canon source material — for fictional characters, in-universe guides, creator statements or official licensed media
Cross-referencing process
Before a height is published, our research team checks a minimum of two independent sources and records the source type. If two reputable sources agree, the figure is accepted. If sources disagree, we flag the entry as disputed and apply the process described below.
Disputed heights
Some heights — particularly for celebrities and public figures — are genuinely contested. Self-reported heights frequently differ from measured heights, and different measurements are sometimes taken at different times of day (people are slightly taller in the morning).
When a height is disputed, we:
- Prefer an independently measured figure over a self-reported one
- Use the figure cited by the most credible and frequently referenced source
- Note the discrepancy on the relevant page where the difference is significant (≥ 3 cm / 1 in)
Unit system
All heights are stored internally in centimetres (cm) and converted to feet and inches for display. Metric is the primary unit; imperial (ft/in) is shown alongside for the convenience of users in the United States, United Kingdom and other countries where imperial units are common. Conversions use standard factors: 1 inch = 2.54 cm exactly.
Global height averages
Our visual comparisons include the world-average adult man (approximately 175 cm / 5 ft 9 in) and world-average adult woman (approximately 162 cm / 5 ft 4 in) as reference figures. These averages are compiled from global epidemiological studies including the NCD Risk Factor Collaboration (NCD-RisC) pooled analysis of national height surveys, covering more than 200 countries. Averages vary significantly by region; figures shown represent global population-weighted means.
Updates and corrections
Height data can change: an athlete may be re-measured, a building may be extended, a character’s canon height may be revised. We review entries and update figures when new authoritative information becomes available. Corrections submitted by users are investigated and, if substantiated, applied promptly.
To report an error or submit a correction with a source, visit our Contact page.
Limitations
Height data is inherently approximate. Even officially measured heights may differ slightly depending on methodology (barefoot vs. shoes, posture, time of day). We aim to be accurate within 1–2 cm for human figures. Figures should be treated as reference information, not precise scientific measurements.
Questions about a specific entry’s source? Email director@intimegrowth.com and we’ll provide the reference used.