About HeightComparison3D

Our mission

Heights are easy to quote and hard to picture. A difference of “6 inches” or “15 cm” means little until you see two people side by side, and a figure like “the average Dutch man is 182.5 cm” raises more questions than it answers: average of whom, measured when, and compared with what? HeightComparison3D exists to close that gap. We turn numbers into to-scale visuals, in 2D or 3D, and pair every visual with a plain explanation and a cited source, so anyone can answer questions like “how tall is that actor next to me?”, “what does a 5′4″ and 6′0″ couple look like?” or “is my child’s height normal for their age?” in seconds, and then check our working.

Height is also a topic full of confident, unsourced numbers. Celebrity heights are copied from site to site without anyone checking where they began; country averages from different decades are mixed in one table; calculators quote formulas without saying what they were designed for. Our aim is to be the place where each number can be traced: who measured it, when, and how much to trust it. When we do not know, we say so.

What you can do here

Everything on the site is free and works without an account, on phones, tablets and desktops. The tools:

• Height comparison tool: Line up to 24 people, characters, objects or landmarks side by side, to scale, in 2D or 3D. Add yourself, set custom heights, and share or download the chart.
• Height difference calculator: The exact gap between two heights in cm and feet and inches, the percentage difference, and where the shorter person’s head reaches on the taller one.
• Height predictor: Estimates a child’s adult height with the mid-parental, CDC percentile and Khamis-Roche methods, each with its error range.
• Height percentile calculator: Where a height falls among US adults (measured NHANES data) or children of the same age and sex (CDC growth charts).
• Growth chart: Plots a child’s height and weight on the CDC 2000 percentile curves for ages 2 to 20.
• Height converter: Converts between centimeters, meters, feet and inches as you type, using the exact definition 1 inch = 2.54 cm.
• Ideal weight calculator: Shows the Devine, Robinson, Miller and Hamwi formulas side by side with the WHO healthy BMI range, and explains why they disagree.
• Height and weight chart: Healthy BMI weight ranges for every height, in metric and imperial units.
• 3D body visualizer: A to-scale 3D figure built from your height, weight and optional measurements, with BMI and waist-to-height ratio.
• Body shape calculator: Classifies measurements with the published FFIT rules for women and a clearly labeled heuristic for men.
• Height from photo: Estimates someone’s height from a photo that includes a reference object of known size. The photo never leaves your device.

Behind the tools sit reference pages built from the same cited data, covering 5,705 real people, 223 fictional characters, 75 landmarks and 200 countries:

• Celebrity heights: actors, musicians, athletes, politicians and more, grouped by field
• Character heights: anime, games, comics and film, organized by franchise
• Average height by country: men and women in every country, with a century of trends
• Landmarks and buildings: skyscrapers, towers, statues and natural wonders
• Tallest lists: the tallest presidents, NBA players, actors and more
• Height pair comparisons: common pairings such as 5′4″ vs 6′0″, visualized
• Planet size comparison: the Sun, planets, Moon and Pluto to scale

The most-searched people, characters, countries and landmarks have their own pages with a researched article. Everyone else is in the search index of the comparison tool, with the same sources attached. The methodology page explains how those pages are chosen.

Who runs this site

HeightComparison3D is built and edited by Kashif Nazir Khan, its founder and editor. Kashif writes and edits the pages, builds the calculators and the 3D comparison tool, chooses the data sources, writes the data rules described in the methodology, works through the data review queue, and handles every correction request personally. Pages show a “Last reviewed” date with his name so you can see when the content was last checked.

HeightComparison3D is an independent project. It is not affiliated with any sports league, studio, publisher, government agency or health organization whose data it cites, and it does not employ clinicians. The health-related calculators (height predictor, percentiles, growth chart, ideal weight, body visualizer) apply published formulas and reference data from bodies such as the CDC and WHO, explain their limits, and are not medical advice. Where a topic needs expert judgment, such as a child who is growing unusually fast or slowly, the page says to talk to a doctor.

Editorial standards

Our sourcing hierarchy

When sources disagree, we use the highest-ranked source available and say what the others report. In order of preference:

1. Measurements by an official body: league and club rosters that measure players, government health surveys such as CDC NHANES, and peer-reviewed pooled analyses such as NCD-RisC.
2. Official records and publications: government and archival records, official biographies, publishers’ databooks and guidebooks for fictional characters, and building owners’ or CTBUH data for landmarks.
3. The person’s own statement in a named, reputable interview, quoted accurately and with its context (for example, whether shoes were on).
4. Curated open data: Wikidata, where each height statement can carry its own reference. This is our starting point for real people because it is traceable and openly licensed, and it is checked against the sources above.
5. Fan-maintained wikis, for fictional characters only, and labeled as such when they do not name an official source.

Fan-measured celebrity height sites and IMDb are never used as the only source for a height. Every factual number on a page is listed with its sources at the bottom of that page; if a number has no reliable source, we do not publish it.

How data is verified

• Every height is normalized to centimeters and checked for unit errors and impossible values.
• Our data build compares well-known people against widely reported heights and puts anything that differs by more than 5 cm, or has conflicting values, into a review queue for a human check.
• We correct the value at its source (for example on Wikidata) where possible. A Wikidata value is only overridden when an authoritative source, such as a league roster or archive, contradicts it; the override is logged and the page explains it. Abraham Lincoln, for example, appeared on Wikidata at 204 cm; we publish 193 cm (6′4″), citing the House Divided Project at Dickinson College. See the methodology for the full rules and more examples.
• Calculator code is checked against the published tables it implements. The growth-chart build, for instance, recomputes every percentile CDC publishes and refuses to run if a single value is off by more than 0.01.

How articles are made, and how we use AI

We want to be transparent about this. The long-form articles on HeightComparison3D are researched and drafted with AI assistance, then edited and reviewed by the editor before publication. In practice, that means AI tools help gather and summarize sources and produce a first draft against a written content guide; the editor then checks each factual claim against the cited sources and the site’s own data, rewrites for accuracy and clarity, removes anything that cannot be supported, and approves the final text. The editor is responsible for everything that is published.

AI is never the source of a height or statistic. Every height of a real person, character or landmark comes from a cited source, never from a language model and never from an estimate made from photos. The headline figure on a page always comes from the site’s reviewed data, and an article may not contradict it silently: if research turns up a conflicting figure, the article discusses the conflict openly and the data is re-checked.

Our content guide also sets rules for how we write:

• People are treated with respect. We follow biography-of-living-persons standards: no body-shaming, no gossip, no speculation about health or cosmetic procedures, and no rumors presented as fact. Height debates are covered only where reputable outlets have reported them, and neutrally.
• Original writing only. We do not copy or closely paraphrase other sites, and we never invent quotes.
• No medical advice. Health content explains published methods and cites them, and says when to see a doctor; it never diagnoses.
• Each page is about its subject. Every section has to contain facts specific to that person, character, country or height; generic filler is cut.

Review dates

The “Last reviewed” date in each byline is the date the page’s data and text were last checked by the editor. All data on the site was accessed and reviewed for the launch on October 17, 2026, and each source in a page’s source list shows the date it was accessed. When a correction is accepted, the review date on that page is refreshed.

Corrections policy

If you think a height or statistic is wrong, email hello@heightcomparison3d.com with the page address, the value you believe is correct and a link to a reliable source, or use the template on the contact page. We aim to review every correction request within 7 days. If the evidence supports a change, we update the page, list the new source and refresh the “Last reviewed” date. If it does not, we reply to explain why.

The most useful evidence is a primary source: a current league or club roster, an official biography, a measured record, a databook page, or an interview in which the person states their height. Links to sites that only repeat a figure without saying where it came from are helpful as leads but are not enough on their own. Significant corrections are recorded in the changelog.

Independence and advertising

• No paid placements. Nobody can pay to be listed, ranked, featured or to have a height changed. Which people get their own page is decided by search demand and prominence, using the published rule on our methodology page, not by requests or payments.
• No sponsored content. We do not publish articles written or paid for by third parties.
• Future ads will be clearly separated. The site may carry advertising in future to keep the tools free. If it does, ads will be visibly labeled and kept apart from the content and the data, and advertisers will have no say over what we publish. Before any ad provider that uses cookies is added, we will update the privacy policy and ask for consent where the law requires it.

Privacy in brief

You do not need an account to use anything on HeightComparison3D, and we do not ask for your name or email unless you write to us. Photos you use in the comparison tool or the height-from-photo tool are processed locally in your browser and never sent to our servers; reloading the page discards them. Heights, weights and measurements you type into the calculators are processed in your browser; when you share a comparison, those values travel in the link itself, so only people you send it to can see them. We count page views with Cloudflare Web Analytics, which is cookieless and does not track you across sites. The full details are in the privacy policy.

Accessibility

We want every tool to be usable by as many people as possible, and we aim to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA. What that means in practice today:

• Every visual comparison is also stated in numbers, in both centimeters and feet and inches.
• Pages work with a keyboard and show a visible focus outline; touch targets are at least 44 pixels.
• The site respects reduced-motion settings and keeps text contrast at WCAG AA or better.
• Reference pages are plain, semantic HTML with real headings and tables; the 3D view loads only in the tools that need it, so content pages stay light on older devices and slow connections.
• Questions and answers use native, keyboard-accessible disclosure controls.

We know the interactive 3D view is harder to use with a screen reader than the rest of the site, and the 2D view and numeric readouts are there as the accessible alternative. If anything on the site is difficult to use with your setup, please email hello@heightcomparison3d.com and tell us what you were trying to do; accessibility reports are treated with the same priority as data corrections.

Data credits and licences

HeightComparison3D stands on openly published data, and we credit it on every page that uses it. People heights start from Wikidata, dedicated to the public domain under CC0. Country averages are from the NCD Risk Factor Collaboration’s 2016 eLife study, as republished by Our World in Data under CC BY 4.0. US adult percentiles are from CDC/NCHS NHANES (August 2021–August 2023), and children’s growth curves are from the CDC 2000 growth charts, both US government works in the public domain. Planet sizes come from NASA’s National Space Science Data Center, and tall-building heights follow the Council on Tall Buildings and Urban Habitat’s criteria. The 3D figures are generated procedurally in your browser; no scanned bodies or third-party 3D models are used.

Contact

Questions, corrections, accessibility problems or feedback: hello@heightcomparison3d.com, or visit the contact page. We read every message. We cannot give medical advice about an individual child or adult, but we are always glad to explain how a calculator works or where a number came from.