Guess the Size
Rate itStretch animals, vehicles and landmarks to the size you think they really are.
Every day: Five objects a day, the same for everyone on that date: animals, vehicles, landmarks and everyday things whose real size you guess against a reference, for up to 500 points. New puzzle: Midnight in the player's local time zone.
Guess the Size is a free browser game about how big things really are. Each day brings the same five objects for everyone, and you resize each one next to something familiar, like a baseball or a person, until it looks right. Every guess scores up to 100 points by how close you got, and the result can be shared.
About Guess the Size
Guess the Size puts a familiar object on the left of a ruler with its real size marked, and a mystery object on the right. You drag the object, use the slider or pinch on a phone to make it as big or as small as you think it really is, then lock in your guess. The game shows the real size, how far off you were and your score.
The daily puzzle is five objects, the same for everyone on the same date, and a new set starts at midnight in your own time zone. Objects come from categories such as animals, bugs and insects, food, everyday things, sports, music, plants, landmarks, and vehicles and space, so one day can ask how wide a six-sided die is and the next how long a blue whale is. Each object is worth up to 100 points: within 6% of the real size scores full marks, half or double scores about 45, and five times off scores close to nothing. Too big and too small count the same.
Past daily puzzles can be played from an archive, though they do not count toward your streak. Besides the daily set there is an Unlimited mode with ten random objects a run, quick five-round games from a single category, and a Duel mode where the closer guess knocks a heart off the other side. Units switch between metres and feet.
The sizes are typical values taken from encyclopedias and sources such as NASA and the US National Park Service, rounded to keep them simple. Scores and settings are kept in your browser, with no account. It suits anyone who likes estimation games and odd facts about scale, and a day's five guesses take a few minutes.
How to play Guess the Size
- Open guessthesize.com and pick Daily.
- Look at the reference object on the left; its real size is marked above it.
- Resize the mystery object on the right by dragging it, moving the slider, or pinching on a phone.
- Press Lock to see the real size, how far off you were and your score out of 100.
- Do the same for all five objects, then share your total out of 500.
Screenshots
Tips
- Use the ruler under the objects: read your guess off it rather than judging the picture alone.
- Think in multiples of the reference: a giraffe is a little over three adults tall, a blue whale about two city buses long.
- Switch to the unit you know best with the m and ft buttons before you start.
- Play a category round in the subject you know least to learn sizes you keep getting wrong.
Questions
What time does Guess the Size reset?
A new daily puzzle starts at midnight in your local time zone, and everyone gets the same five objects on the same date.
Is Guess the Size free?
Yes. It plays in the browser with no sign-up and nothing to download.
Can I play past puzzles?
Yes. Every past daily puzzle is in the archive, but playing one does not count toward your streak.
Is it the Roblox game Guess The Real Size?
No. It is an independent browser game built on the same idea and is not affiliated with Roblox.
Ratings and reviews
No ratings yet. Be the first to rate Guess the Size.
Games like Guess the Size
How big? roughly.
The same idea: drag one object to its real size next to another, five times a day.
Magnitudle
Resize silhouettes to their true scale, with a harder one-shot number guess beside it.
Airspan (FlightQ)
Resize planes and airports against a known object, for players who liked the vehicles rounds.
INSET
Size by eye on a map: drag a country to its true size over somewhere else.
How wide? roughly.
Scale one city's outline against another until the areas match.
Weighsies
Estimate weight instead of size: how many familiar things it takes to balance something heavy.
NEARISH
Five numbers to estimate a day; the closer you get, the more of 500 points you score.
100 of Us
Of 100 people in the world, how many? One guess a day.