Size It Up Unlimited
A giraffe. A rocket. An entire country.
How big do you think it really is?
Drawing the blueprints…
- 5%within it for full marks
- ×1 ×1 ×2 ×3 ×31,000 points in a perfect run
- 4×too big or small scores zero
Drag the corner or slide the ruler. Arrow keys make fine adjustments.
Progress stays in this browser when storage is available.
Trust your eye for scale
How big is it, really?
One known measurement. One outline to resize. Compare countries, rockets and landmarks on a shared blueprint, then watch your guess meet the real size.
Find your yardstick
The left outline gives you a measured size. Both objects use one physical scale.
Resize by eye
Drag the corner or slide the ruler. Check the measurement being compared: height, length, diameter or area.
Lock it in
The solid outline moves to the real size while a dashed outline preserves your guess. Read the measurement and its source.
Finish the five
Within 5% earns full marks. The final rounds count triple. Share your score, then deal another run.
A few things to know
What is Size It Up Unlimited?
A visual estimation game with two outlines on one blueprint. The left object has a known size. Resize the right object until the physical scale looks right, then lock in your guess. Five rounds make a run, and you can play again as often as you want.
How are guesses scored?
Guessing twice as big and half as big earns the same score. A ratio error of 1.05 or less scores a perfect 100; a ratio error of 4 or more scores zero. Between those limits the score follows a smooth logarithmic curve. The five rounds are worth ×1, ×1, ×2, ×3 and ×3, for a maximum of 1,000.
What can I compare?
The collection has 326 objects: 240 countries and territories, 56 US states and territories, 14 planets and other Solar System bodies, six landmarks, four vehicles, two animals and four sports courts. Choose a mixed collection, only places, or things and space. Familiar targets come first; the last rounds favour less familiar targets and wider differences in size.
Are country outlines shown to scale?
Yes. Each place is drawn with a local Lambert azimuthal equal-area projection. The filled polygon area, rather than its bounding rectangle, determines the shared scale. Doubling a drawn outline makes its represented area four times larger. Some distant territories are moved into compact insets with their original area scale preserved. Areas are approximate calculations from simplified Natural Earth or Census boundaries, including represented islands and water, and are not official land-area statistics.
Where do the measurements and drawings come from?
Every answer has a measurement note and a link to its primary source. Geography uses public-domain Natural Earth and US Census boundaries; planetary diameters use NASA/JPL figures. Landmarks and vehicles use official operator or manufacturer measurements; sport uses governing-body dimensions. The non-geographic silhouettes are original simplified illustrations. Animal values explicitly identify a representative adult or a recorded maximum.
Can I use a phone or a keyboard?
Yes. Drag the bright corner handle or use the ruler beneath the board. Focus the ruler or the corner and press arrow keys to adjust the size. The corner also supports Shift plus an arrow for a larger adjustment and Home or End to reach either limit. The metric/imperial button changes display units without changing your guess.
Will my game survive a refresh?
Your unfinished run, current guess, best score, run count and recent objects are saved in this browser when local storage is available. After a refresh use Resume to return to the same round. If storage is blocked you can still complete a run normally.
Is this the original Size It Up?
This is an independent single-player remake inspired by Size It Up, with original interface code, illustrations and a separately sourced catalog. It is not affiliated with Play Daily.