Height Comparison Tool — Compare Heights in cm and Feet (to Scale)
Compare heights online in seconds. Add people, animals and objects to a to-scale ruler, read both centimetres and feet/inches at once, and export a clean PNG of your height difference chart.
Add a person
Pick an avatar, set a height, place it on the ruler.
Start from a set
A ready-made line-up you can edit afterwards.
Add an object
Tap to place it on the ruler.
Add your own image
A cut-out PNG works best. It stays on your device.
What is a height comparison tool?
A height comparison tool is a visual ruler that lines up people, animals and objects to scale so you can compare heights in centimetres and feet at the same time. Instead of mentally converting numbers, you see the actual difference between two people, a door, a car, or even a giraffe and the Eiffel Tower. This page is a free, browser-based height comparison chart that works on desktop and mobile, and it lets you export the result as a PNG.
People use a height difference calculator for all kinds of reasons: checking whether furniture will fit through a doorway, planning family growth charts, teaching measurement in a classroom, sizing cosplay characters, or comparing sports rosters. The tool above does the maths, drawing and unit conversion so you can focus on the answer.
How to compare heights online (step by step)
Using the height comparison chart above takes under a minute. Follow these steps:
Step 1 — Add people to the ruler
Open the Person tab, choose an avatar, type a height in cm or ft/in, or tap one of the quick-height chips (100 cm, 140 cm, 165 cm, 180 cm, 200 cm). Press Add person to drop the figure onto the ruler.
Step 2 — Add objects and landmarks
Open the Objects tab to add a door, fridge, car, basketball hoop, horse, giraffe, elephant, T. rex, oak tree, Statue of Liberty, Eiffel Tower, Burj Khalifa or Mount Everest. Each item has a real-world height attached.
Step 3 — Add your own image
Open the Image tab, drop a cut-out PNG (a clean transparent background works best), set its height, and press Add image. Everything stays on your device — nothing is uploaded.
Step 4 — Switch units, sort and compare
Use the cm / ft / in toggle at the top of the stage. Values you already typed convert automatically. Press Sort by height to line everyone up from tallest to shortest.
Step 5 — Save or share the chart
Press Save PNG to download a clean image, or Share to send it via your device’s share sheet. Copy summary copies a text list of every height on the ruler.
Quick tip
Click any name on the ruler to edit that person. Press Esc to cancel, or press Undo in the toast if you delete or clear something by mistake.
Why a to-scale height chart beats a calculator
A normal height calculator gives you a number. A to-scale height comparison chart gives you the picture. That matters because humans are visual: we understand relative size far faster when we can see two figures side by side than when we read “165 cm vs 172 cm”.
- Instant difference. You see exactly where the shorter figure reaches on the taller one.
- Two units at once. cm and ft/in sit side by side on the ruler, so nobody needs to convert.
- Real-world references. A door, a fridge or a car gives context that a bare number can’t.
- Shareable output. The PNG export is ready for blog posts, slides, homework and social media.
- No apps, no sign-up. Everything runs in the browser and works on mobile.
Common uses for a height comparison chart
Family and kids’ growth
Track how children grow year over year. Line up Mum, Dad, siblings and grandparents to see who carries the tall gene. The average and difference readouts give you a quick family snapshot.
Furniture, doors and ceilings
Before buying a sofa or wardrobe, compare its height to a standard door (203 cm) and a ceiling. Add the door object, then add the furniture height as an image or a person-shaped placeholder to see clearance at a glance.
Sports and team line-ups
Compare basketball, football and volleyball rosters. Load the “Team huddle” preset to see how a 206 cm centre towers over a 171 cm guard.
Education and classrooms
Teachers use the ruler to teach metric vs imperial, averages, ranges and scale. Students can add real classmates (anonymised) or historical figures to make measurement concrete.
Design, cosplay and storytelling
Illustrators, game designers and cosplayers compare character heights. Add fantasy avatars like the crowned royal or cloaked figure, or upload a character cut-out to scale it against a 175 cm human reference.
How to read cm and ft/in at the same time
The ruler labels every major line in both units. If you are working in centimetres, the left side shows cm and the right side shows the equivalent in ft / in. If you switch to imperial, the sides swap. This means you never have to mentally convert 168 cm to 5′ 6″ or 5′ 9″ to 175 cm again.
Quick reference:
- 1 inch = 2.54 cm
- 1 foot = 12 inches = 30.48 cm
- 1 metre = 100 cm = 3.281 ft
- 1 cm ≈ 0.3937 inches
Common heights quick reference
This table shows common heights in both metric and imperial. Use it together with the ruler above to place figures accurately.
| Description | cm | ft / in | m |
|---|---|---|---|
| Newborn baby (average) | 50 cm | 1′ 8″ | 0.50 m |
| Toddler (age 2) | 87 cm | 2′ 10″ | 0.87 m |
| Child (age 6) | 116 cm | 3′ 10″ | 1.16 m |
| Child (age 10) | 139 cm | 4′ 7″ | 1.39 m |
| Teenager (age 14) | 160 cm | 5′ 3″ | 1.60 m |
| Adult woman (world average) | 160 cm | 5′ 3″ | 1.60 m |
| Adult man (world average) | 171 cm | 5′ 7″ | 1.71 m |
| Tall man (95th percentile) | 190 cm | 6′ 3″ | 1.90 m |
| Standard door | 203 cm | 6′ 8″ | 2.03 m |
| Standard ceiling | 244 cm | 8′ 0″ | 2.44 m |
How tall is: landmarks, animals and objects
A height comparison chart is especially useful when the numbers get big. Here are the heights of several well-known animals, buildings and landmarks, all built into the Objects tab above.
| Item | Height (cm) | Height (m) | Height (ft) |
|---|---|---|---|
| Horse (withers) | 165 cm | 1.65 m | 5′ 5″ |
| Fridge | 178 cm | 1.78 m | 5′ 10″ |
| Door | 203 cm | 2.03 m | 6′ 8″ |
| Polar bear (standing) | 250 cm | 2.50 m | 8′ 2″ |
| Ostrich | 250 cm | 2.50 m | 8′ 2″ |
| Basketball hoop (rim) | 305 cm | 3.05 m | 10′ 0″ |
| Elephant (African bush) | 320 cm | 3.20 m | 10′ 6″ |
| T. rex (hip height) | 400 cm | 4.00 m | 13′ 1″ |
| Giraffe (average) | 500 cm | 5.00 m | 16′ 5″ |
| Oak tree (mature) | 2,000 cm | 20 m | 65′ 7″ |
| Statue of Liberty (incl. base) | 9,300 cm | 93 m | 305 ft |
| Eiffel Tower (to tip) | 33,000 cm | 330 m | 1,083 ft |
| Burj Khalifa (to tip) | 82,800 cm | 828 m | 2,717 ft |
| Mount Everest | 884,800 cm | 8,848 m | 29,029 ft |
Average human heights by country
Average adult heights vary significantly between countries and generations. The table below shows approximate average heights for adults aged 18–40, based on widely cited anthropometric surveys.
| Country | Men (cm) | Women (cm) | Men (ft/in) | Women (ft/in) |
|---|---|---|---|---|
| Netherlands | 183 | 170 | 6′ 0″ | 5′ 7″ |
| Germany | 180 | 167 | 5′ 11″ | 5′ 6″ |
| United States | 177 | 163 | 5′ 10″ | 5′ 4″ |
| United Kingdom | 177 | 163 | 5′ 10″ | 5′ 4″ |
| Canada | 176 | 163 | 5′ 9″ | 5′ 4″ |
| France | 176 | 164 | 5′ 9″ | 5′ 5″ |
| Australia | 175 | 161 | 5′ 9″ | 5′ 3″ |
| Japan | 172 | 158 | 5′ 8″ | 5′ 2″ |
| China | 172 | 160 | 5′ 8″ | 5′ 3″ |
| Brazil | 173 | 160 | 5′ 8″ | 5′ 3″ |
| India | 166 | 155 | 5′ 5″ | 5′ 1″ |
| Mexico | 170 | 158 | 5′ 7″ | 5′ 2″ |
| South Korea | 174 | 161 | 5′ 8″ | 5′ 3″ |
| Nigeria | 169 | 158 | 5′ 7″ | 5′ 2″ |
These figures are broad averages. Individual heights depend on genetics, nutrition, age and health, and they should never be used to judge or rank people.
Tips for accurate height comparison
- Measure without shoes. Shoes can add 2–4 cm and distort comparisons.
- Use the same reference point. For people, measure to the top of the head. For furniture, measure to the highest point.
- Round consistently. If you round one figure to the nearest cm, round them all.
- Use a cut-out image. A PNG with a transparent background scales cleanly and avoids cropping issues.
- Check the unit before you type. The quick chips and unit toggle make this easy.
- Keep the ruler tidy. Delete figures you no longer need so the layout stays readable.
Common mistakes and how to avoid them
- Mixing cm and ft inputs. Fix: use the unit toggle; the tool converts what you have already typed.
- Forgetting to set a height. Fix: the form shows a hint if the height field is empty before you press Add.
- Using a stretched image. Fix: upload a clean cut-out with the correct aspect ratio.
- Assuming silhouettes are exact. Fix: treat the avatars as to-scale visual guides, not engineering drawings.
- Losing work after a clear. Fix: press Undo in the toast that appears after deleting or clearing.
- Expecting Save PNG to work with an empty ruler. Fix: the button stays disabled until at least one figure is added.
Accessibility features
- All controls are real buttons, inputs and selects with visible focus rings.
- Figures carry aria-label text describing the name and both heights.
- The theme respects prefers-color-scheme and offers a manual light/dark toggle.
- Animations respect prefers-reduced-motion.
- The rail becomes a horizontal tab strip on small screens for easier tapping.
- The FAQ uses native <details> so keyboard and screen-reader users can expand answers.
30 frequently asked questions
1. What is a height comparison tool?
A visual ruler that lines up people, animals and objects to scale so you can compare heights in cm and ft/in at a glance.
2. Is this height comparison tool free?
Yes. It runs entirely in your browser, requires no account, and stores your list locally.
3. Do I need to install anything?
No. Paste the widget into any HTML block — it works out of the box.
4. Does it work on mobile?
Yes. The layout stacks and the rail becomes a horizontal tab strip on small screens.
5. How do I add a person?
Open the Person tab, pick an avatar, type a height, then press Add person.
6. How do I add an object like a door?
Open the Objects tab and tap the object. It appears on the ruler instantly.
7. Can I add my own image?
Yes. Open the Image tab, drop a PNG/JPG/SVG, set a height, and press Add image.
8. What image works best?
A cut-out PNG with a transparent background works best.
9. Is my image uploaded to a server?
No. Images stay on your device and are only used in the browser.
10. How do I change between cm and ft/in?
Use the cm / ft-in switch at the top of the stage. Values you already typed convert automatically.
11. How do I edit someone already on the ruler?
Click the person’s name on the ruler. The form loads their details; press Update person to save.
12. How do I delete one figure?
Click the ✕ next to the figure’s name.
13. How do I clear everything?
Press Clear all. You can undo immediately from the toast.
14. Can I undo a delete or clear?
Yes. After deleting or clearing, click Undo in the toast.
15. How do I sort by height?
Press Sort by height. Press again to switch between tallest-first and shortest-first.
16. What does “Difference” mean?
It is the gap between the tallest and shortest item currently on the ruler.
17. How is the average calculated?
It is the mean height of every person, animal and object on the ruler.
18. Can I copy a summary?
Yes. Press Copy summary to copy a text list of every item and its height.
19. How do I save the chart as an image?
Press Save PNG. The chart is drawn to a PNG and downloaded.
20. How do I share the chart?
Press Share. On supported devices it opens the native share sheet; otherwise it copies or downloads the PNG.
21. Why is Save PNG disabled?
It is disabled until you add at least one item to the ruler.
22. Why did sharing not work?
Some browsers block file sharing. Owl then copies the image or saves the PNG instead.
23. Can I change the figure colour?
Yes. Pick a swatch before adding a person. The colour is saved with that figure.
24. Can I change the avatar style?
Yes. Use the search, gender, build and style filters in the avatar picker.
25. Can I compare animals?
Yes. The Objects tab includes horse, giraffe, elephant, polar bear, ostrich, T. rex and more.
26. Can I compare buildings and landmarks?
Yes. The Giants group includes an oak tree, the Statue of Liberty, the Eiffel Tower, the Burj Khalifa and Mount Everest.
27. Are the silhouettes exact?
They are stylised, to-scale silhouettes. They are great for visual comparison, not engineering drawings.
28. Are the heights drawn to scale?
Yes. Every figure is scaled to the same ruler, so relative height is accurate.
29. Can I embed this on my own website?
Yes. Paste the widget into any HTML block. Change data-key if you use more than one on a page.
30. Is the tool accessible?
Yes. It uses real buttons, labels, focus styles and reduced-motion support. Figure names double as accessible labels.
Content ideas for your page
If you are publishing around this height comparison tool, these angles turn the widget into a full article, lesson or resource:
Ready to compare?
Add a person, drop in an object, or load a ready-made set. Then save or share the chart.