Size It Up

Size It Up Game

THE DAILY SIZE GUESSING GAME · FIVE ROUNDS · 2 MINUTES

DailyNo. —
ROUND 1 / 5 today’s five
0 / 500

Reference —

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Drag to move · pull a corner or scroll over it to resize · Enter to lock
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QR code of the share link

On your phone? Scan to open the link there — then share it to TikTok, Instagram or a chat.

How to play Size It Up

  1. Compare. The black silhouette is the reference. It is at true scale and never changes.
  2. Resize. Drag the white silhouette and pull any corner or edge of its frame (or pinch, or scroll over it) until it looks right next to the reference. Zoom out if you need room.
  3. Lock in. The true size is drawn in red over your guess. Within 6% scores 100; twice or half the size scores 45; five times off scores 0.

How big is it, really?

Size It Up is the daily size guessing game where you resize a silhouette until it matches the real world. A black cut-out sits on the table at true scale. A white one is yours to stretch. When it looks right, lock it in — and find out, in red, how far off you were.

Play today’s five
Size It Up game board: a black school bus cut-out drawn at its true 12 metres beside a white blue whale silhouette waiting to be resized

One round of Size It Up, start to reveal.

See the Size It Up game in thirty seconds

Watching one round explains the whole thing. The school bus is the reference: it is drawn at its real length of 12 metres and it never moves. The blue whale is your guess. Drag it, pull a corner to make it bigger or smaller, and stop when the two feel right next to each other. Lock in, and the true whale is drawn over yours like a correction in red pen — 27 metres, more than twice the bus.

That gap between what you thought and what is true is the entire game. Most people guess a whale at about half its length. Almost everyone puts the Eiffel Tower too short and a giraffe too tall. Size It Up is built around that surprise, five times a day.

Five paper cut-outs from one week of the Size It Up daily game — blue whale, giraffe, rocket, Eiffel Tower and basketball — on a kraft table with a red pen
Five cut-outs from one week of the Size It Up daily game: whale, giraffe, rocket, tower, basketball.

How to play Size It Up

  1. Step one, compare: the black school bus reference silhouette with a ruler above it reading 12 m

    01 · COMPARE

    Look at the black silhouette on the left of the Size It Up board. That is the reference, already at true scale, with a ruler above it showing its real measurement. Everything you do is relative to it.

  2. Step two, resize: a fingertip dragging the bottom-right corner handle of the white blue whale cut-out to make it bigger

    02 · RESIZE

    Drag the white silhouette anywhere on the board and pull a corner handle to resize it. On a phone, pinch. Zoom the Size It Up game board out if the thing you are sizing is enormous — a container ship next to a bicycle needs room.

  3. Step three, lock in: the true blue whale outline drawn in red over the smaller white guess, labelled 27 m

    03 · LOCK IN

    Press Lock in, and the Size It Up game draws the true size in red over your guess, with the real number, the percentage you were off by, and a fact worth repeating. Up to 100 points a round; 500 for a perfect day.

The moment that makes people share Size It Up

Every Size It Up round ends the same way: the red outline lands, and you either laugh or argue with it. The scoring is honest about how hard this is. Within 6% of the true size scores 100. Half or double the size scores 45. Five times off scores nothing, and yes, that happens with planets.

After the fifth round of the Size It Up daily game you get the day’s total, a card you can share without spoiling the answers, and a line that says how you compare with everyone else who played today. Share the card, or dare a friend to beat your score on the same five silhouettes.

The Size It Up reveal: school bus reference, white whale guess, the red true outline at 27 m, and a round score of 64 out of 100
The reveal: your guess in white, the truth in red, the score for the round.

Three ways to play the Size It Up game

all free · no account
Five puzzle cards side by side with a red calendar corner — the same five silhouettes for everyone each day

Daily

The Size It Up daily game gives everyone the same five silhouettes, refreshed at midnight in your own time zone. Keep a streak, beat yesterday’s score, and compare with friends who played the same puzzle.

Play today’s five
A thick stack of silhouette cards of animals, vehicles and landmarks — Size It Up Unlimited draws from the whole library

Unlimited

No daily cap. Size It Up Unlimited draws random pairs from the whole library — animals, landmarks, vehicles, planets and everyday objects — for as long as you want to keep going. Send any run as a challenge link.

Play unlimited
Paper cut-outs of Japan and New Zealand side by side, as in Size It Up Geography

Geography

Size It Up Geography turns countries and US states into cut-outs. Is Japan longer than New Zealand? Is Texas bigger than France? Your mental map is about to be corrected.

Play geography

Sizes that surprise almost everyone

See every day’s answers

Some pairs catch nearly every player out, and the real measurements are the whole argument. Blue whale against school bus: 27 metres to 12, a little over twice as long. Eiffel Tower against the Statue of Liberty: 330 metres to 93, three and a half times taller. Texas against France: 695,662 square kilometres to 551,695, about a third bigger. Every pair that appears in the Size It Up daily game gets explained on its answer page the same day — or dare a friend to guess it blind first.

Blue whale vs school bus

27 m
12 m

2.3× longer

Eiffel Tower vs Statue of Liberty

330 m
93 m

3.5× taller

Texas vs France

695,662 km²
551,695 km²

1.3× the area

Why the Size It Up game is harder than it looks

You know what a blue whale looks like. You have seen a thousand pictures. But almost nobody has stood next to one, so the number in your head is a guess dressed up as knowledge. The Size It Up game turns that into something you can actually get better at: after a week, you start carrying a few anchors — a bus is 12 metres, a person is 1.7, a football pitch is 105 — and you measure everything else against them.

That is also why the reference object matters so much. We never ask you for a number. We ask you to make two things look right together, which is how your eye already works. The Size It Up game just checks your eye against the tape measure.

The Size It Up library is our own: every silhouette is a cut-out we drew or sourced under an open licence, and every measurement links to where it came from. When a size is contested — which whale, which pedestal, with or without the antenna — the caption says which one you are looking at.

Questions about Size It Up

Is this the Size It Up game everyone is playing?
It is the same idea — resize a silhouette until it matches true scale — but this Size It Up game has its own library, an unlimited mode, a geography mode, and an answer page for every day. If you came here from a friend’s challenge link, you are in the right place.
How does the Size It Up daily game work?
Five silhouettes, the same for everyone, new at midnight in your time zone. Each round is worth up to 100 points. Your streak counts the days you finished all five.
How is the Size It Up score calculated?
By how far your size is from the true size, in ratio, so half and double score the same. Within 6% is 100 points; 12% is 90; a fifth off is 78; a third off is 62; half or double is 45; three times off is 30; five times off is zero.
Do I need an account to play the Size It Up game?
No. Your streak, history and best score live in your browser. Challenge links work without signing up, for you and for the friend you send them to.
Is there a Size It Up unlimited mode?
Yes. Size It Up Unlimited has no daily cap and draws from the whole library. It is the best way to practise before the daily puzzle, or to keep playing after it.
Where do the Size It Up sizes come from?
Each object links to its source — usually an encyclopedia entry or a manufacturer’s specification. If you think one is wrong, the contact page is at the bottom, and we do fix them.