Daily Height Challenge: guess how tall famous people are, to scale
Five rounds a day, the same for everyone. Drag each one to the height you think, then see how close you were.
Built by Nitin Raja · Last updated
The Daily Height Challenge is a free height guessing game: every day you get five rounds, three famous people, one fictional character and one object, animal or landmark, and you drag each one to the height you think it is. A grey reference figure stands next to it at true scale, so you judge the height by eye the way you would in real life, not by picking from four numbers. Lock in your guess and the figure snaps to its real height, with the difference in centimetres or feet and inches, your points and the source of the number. Everyone plays the same five, so you can compare scores with friends without giving the answers away, and a new celebrity height quiz starts at midnight UTC. When you want more, Unlimited mode deals five random rounds as often as you like, and the Archive keeps every past day.
How to play the Daily Height Challenge
1. Open today's challenge
Open the Daily tab and tap "Play today's challenge". Everyone gets the same five rounds, and a new challenge starts at midnight UTC.
2. Read who it is
Each round names a famous person, a fictional character or an object, animal or landmark. A grey reference figure stands at its true height next to them (170 cm, or you if you saved your height on this site).
3. Drag to your guess
Drag the figure up or down on the to-scale chart, or use the slider, the minus and plus buttons or the arrow keys. Your guess shows in centimetres and in feet and inches.
4. Lock in and see the answer
Tap "Lock in my guess". The figure grows or shrinks to the true height, with the difference, your points and where the height comes from.
5. Share your score
After five rounds you get a score out of 500. Share the result as text (no spoilers) or save a score image, and come back tomorrow to keep your streak.
How does the scoring work?
Each round is worth up to 100 points, so a perfect day is 500. For people and characters the score depends on how many centimetres your guess is from the listed height: within 1 cm scores the full 100, and the points then fall away smoothly, slowly at first and faster as the error grows. The formula is points = 100 x e-((error - 1) / 10)^1.5, rounded, with the error in centimetres.
| Your guess is off by | Points |
|---|---|
| 0 cm (0 in) | 100 |
| 1 cm (0.4 in) | 100 |
| 2 cm (0.8 in) | 97 |
| 3 cm (1.2 in) | 91 |
| 5 cm (2.0 in) | 78 |
| 8 cm (3.1 in) | 56 |
| 10 cm (3.9 in) | 43 |
| 15 cm (5.9 in) | 19 |
| 20 cm (7.9 in) | 7 |
| 30 cm (11.8 in) | 1 |
Worked example. Jacob Elordi is listed at 196 cm (6′ 5″). If you drag him to 6′ 3″ (190.5 cm), you are 5.5 cm short, which scores 74 points.
Objects, animals and landmarks score by percentage instead, because nobody guesses a skyscraper to the centimetre. The error is measured as a ratio (100 x the natural log of guess / true height, which is close to the percentage), so guessing twice the height and guessing half the height count as equally wrong. Within 1% scores 100.
| Your guess is too tall by | Points |
|---|---|
| 1% | 100 |
| 2% | 98 |
| 5% | 83 |
| 10% | 55 |
| 15% | 32 |
| 20% | 18 |
| 30% | 5 |
Worked example. The Empire State Building is 443.2 m to the tip. A guess of 400 m is about 10% short and scores 51 points.
The share text shows one block per round: █ 85 to 100 points, ▓ 60 to 84, ▒ 30 to 59 and ░ under 30. It never shows names or heights, so posting it in a group chat does not spoil the day for anyone.
Where do the heights come from?
Every answer in the game is a height we already publish on CheckMyHeight, with its source shown on the reveal.
- Famous people (619 in the game, 182 of them women): the height on Wikidata (property P2048). People whose height on our site is only "reported" in the press, and people whose sources disagree, are left out of the game, because a game should not score you against a disputed number. Each person also needs a freely licensed photo, which is credited on the round.
- Fictional characters (73): official databooks, publisher profiles and game guides, the same list as our character heights page. Characters whose only source is a fan wiki summary box are not used.
- Objects, animals, record holders and landmarks (36): the source named for each one, such as Guinness World Records, the Council on Tall Buildings and Urban Habitat (CTBUH), national surveys and the owners of the buildings. See landmark heights.
How we check and correct heights is explained in our editorial policy. If you think an answer is wrong, tell us with a source and we will check it.
Tips for guessing celebrity heights
- Use the reference figure. It is 170 cm (5′ 7″) unless you saved your own height on this site, in which case it is you. Ask yourself "taller or shorter than this, and by how much?" before you drag.
- Know the averages. Adult men in the United States average about 175 cm (5′ 9″) and women about 161 cm (5′ 3½″), according to CDC measurements from 2015 to 2018. Many actors are close to average; models and basketball players are not. Our average height page has the numbers by country.
- Do not trust the screen. Camera angles, footwear and careful framing make people look taller or shorter than they are. Our list of surprising celebrity heights shows how far off first impressions can be.
- Switch units if it helps. If you think in feet and inches, use the ft button; the rulers and the slider follow.
- For landmarks, think in multiples. The Leaning Tower of Pisa is about 57 m, the Eiffel Tower 330 m to the tip. How many of the reference would fit?
Daily, Unlimited and Archive
Daily is the same five rounds for everyone, from midnight to midnight UTC. Your progress is saved after each round, so you can close the page and carry on later, and a guess you have locked in cannot be changed. Finish it on the day to keep your streak. Unlimited deals five random rounds from the same mix whenever you like, avoiding the last subjects you have seen on this device. The Archive lists every earlier day back to #1 on October 20, 2026; you can play each one once, but archive games do not count toward your streak. Stats shows your games, average and best score, your current and longest streak and how your daily scores spread out.
Why we built the Daily Height Challenge
Most people who find CheckMyHeight are looking up one person's height, usually someone in the news that week. The number often surprises them, because heights are hard to judge from photos and films, because there is rarely anything of known size next to the person.
We already had the pieces to make that a game: a catalog of more than 1,200 sourced heights, freely licensed photos with their credits, characters from official sources and a chart that draws everything to scale. The Daily Height Challenge puts one subject at a time next to a figure of known height and asks you to set the height yourself, which is a better test of your eye than choosing between four numbers. It is one shared puzzle a day because guessing the same five as your friends, then comparing scores, is the fun part.
What the game measures
The game measures how close your guess is to the height we list, nothing else. It does not measure your own height (for that, use the phone camera height tool). For each round it stores your guess in centimetres, scores it with the formulas above and keeps the result in your browser's local storage, together with your streak and stats. It sends nothing about your guesses to us, and there is no account.
The chart is to scale: the reference and the subject share one ruler, centimetres on the right and feet on the left. For people and characters the chart always goes up to 250 cm, so its size does not hint at the answer. For objects the reference changes with size (an A4 sheet, the 170 cm figure, the Leaning Tower of Pisa, the Eiffel Tower or the Burj Khalifa) and the top of the chart is set from the day's seed, somewhere between about 1.35 and 2.4 times the true height. The daily schedule is fixed in advance for the next year, so a past day never changes: a person does not come back within 60 days, a character within 40 days and an object within 25 days. The pools were last rebuilt on October 24, 2026.
Why this height game is different
- Real people at true scale. You set the height on a ruler next to a reference, instead of choosing from a list or picking the taller of two.
- Sourced answers only. Every reveal names its source, and people with disputed heights are left out.
- Licensed photos with credits. Photos are freely licensed images from Wikimedia Commons, credited on each round; the share image uses outlines only.
- Spoiler-free sharing. The share text is a score and five blocks; the score image is there when you want to show the answers.
- Private and free. No account, no sign-in, nothing uploaded; stats stay on your device.
- Your units. Centimetres or feet and inches at any time.
| Daily Height Challenge | Typical height quiz | |
|---|---|---|
| How you answer | Drag to scale next to a reference | Multiple choice or taller/shorter |
| Score | Up to 100 a round, by closeness | Right or wrong |
| Source shown | On every answer | Rarely |
| Same puzzle for everyone | Yes, daily, plus an archive | Usually random |
| Units | cm or ft/in | Usually one |
| Account needed | No | Sometimes |
Prefer quick-fire rounds? Our celebrity height game has a taller-or-shorter streak and a 10-question quiz.
How accurate are the answers?
The game scores you against the height we list, and listed heights are not lab measurements. Wikidata heights usually come from official profiles, sports registers or interviews, and people often round up or measure in shoes. That is why the scoring gives the full 100 within 1 cm and still gives most of the points within a few centimetres. Fictional characters have exactly the height their creators published, and buildings and mountains are measured by surveys, so those answers are precise.
Daily Height Challenge FAQ
What is the Daily Height Challenge?
A free daily game on CheckMyHeight: five rounds a day, the same for everyone, where you guess how tall famous people, a fictional character and an object or landmark are by dragging them to scale next to a reference figure. Each round scores up to 100 points.
When does the daily height challenge reset?
At 00:00 UTC every day. The countdown under your score shows the time left. Past challenges stay playable in the Archive tab, but they do not count toward your streak.
How are points calculated?
For people and characters, a guess within 1 cm of the listed height scores 100, and points fall smoothly with the error: 3 cm off scores 91, 5 cm scores 78, 10 cm scores 43 and 20 cm scores 7. Objects and landmarks score by percentage instead: within 1% scores 100, 5% off scores 82 to 83 and 10% off scores 52 to 55.
Where do the heights come from?
Famous people use their Wikidata height; people whose height is only "reported" or whose sources disagree are left out of the game. Characters use official databooks, publisher profiles and game guides. Objects and landmarks use the source named on each reveal, such as Guinness World Records, CTBUH or the owner of the building.
Is there an unlimited mode?
Yes. Unlimited plays five random rounds from the same mix as often as you like. Your unlimited games have their own stats and do not affect your daily streak.
How does my streak work?
Your streak counts the days in a row on which you finished that day's challenge. Stats and streaks are saved in your browser only, so they do not move between devices and clearing your browser data resets them.
Can I play in feet and inches?
Yes. The cm / ft button switches every height, the slider and the rulers between centimetres and feet and inches at any time, and the game remembers your choice.
Does the game use my camera or upload anything?
No. The game runs in your browser and sends nothing about your guesses to us. If you measured or typed your height elsewhere on CheckMyHeight, that height (saved on your device) becomes the reference figure.