About
About HeightComparison
HeightComparison is a free, browser-based height comparison tool. It draws people side by side on one accurate proportional scale so that a height difference becomes something you can see, not just a number you have to imagine.
- 100% free
- No sign-up
- Runs in your browser
- Nothing uploaded
Why this exists
HeightComparison started with a small, familiar frustration. Someone tells you they are 6 feet tall, or that a basketball player is 7 foot 1, and the number means almost nothing until you see it next to a height you already know. Most people do the math in their head, get a rough answer, and move on.
The tools that existed for this were either cluttered with ads on top of the chart, drew figures that were not actually to scale, or required an account to save a comparison. We wanted something closer to a ruler: fast, honest and private. So we built one.
The result is what you see on the homepage. Enter a few heights, and every figure is rendered from the same floor line with the same scale. The difference shows at the head, exactly the way it does when two people stand back to back.
What the tool does
Compare any number of people
Add two people or ten. Give each a name, a male or female figure and a color, and the chart redraws instantly.
Feet, inches or centimeters
Type 5'10" or 178 cm. Every height is converted with exact unit definitions (1 in = 2.54 cm) and shown in both systems.
Share a link or download a PNG
The whole comparison lives in the URL, so a link shows the same chart to anyone. Or export it as an image.
How we keep it accurate
Every height you enter is converted to a single centimeter value using the exact definitions of the units: 1 inch is 2.54 cm and 1 foot is 30.48 cm. That value is what the chart draws from. Nothing is rounded until it is displayed, so switching between feet and centimeters never drifts.
The chart then picks its scale from the tallest person and draws everyone at height × scale. Because the scale is shared, the ratio between any two figures on screen is the same ratio that exists in real life. You can read more about the math on the How it works section of the homepage.
Where our guides cite average heights or research, we name the source (for example, the CDC's anthropometric reference data or the NCD Risk Factor Collaboration's global study) so you can check it yourself. If you spot a number that looks wrong, tell us and we will correct it.
What we care about
Accurate
Every figure is drawn at real height × one shared scale. A 180 cm person is always exactly 1.2× a 150 cm person, never an approximation.
Private
The names and heights you enter never leave your device. There is no database of your comparisons because there is no database at all.
Free
No account, no paywall, no premium tier. The site is supported by unobtrusive advertising so the tool itself can stay free.
Simple
Two fields and a button. If a feature makes the first comparison slower to build, it does not ship.
Who uses HeightComparison
- Friends settling a "who's taller" debate
- Writers and artists checking that characters' heights feel right together
- Parents tracking a child's growth from year to year
- Sports and celebrity fans comparing players and actors
- Teachers explaining ratios and unit conversion with a visual example
- Anyone who has ever wondered what a 4-inch height difference really looks like
Get in touch
Found a bug, want a feature, or think a height in one of our guides is off? We read every message. Email contact@heightcomparisonchart.net or use the contact page.
Editorial standard: our written guides are researched and written by the HeightComparison team, cite named sources for statistics, and are reviewed when new data is published. Read our Privacy Policy and Terms of Use.