Size It Up

Five rounds. Guess the real-world size.

Easy
Easy
Medium ×2
Hard ×3
Hard ×3

Scale Table Tennis Paddle

American Football 27.9 cm wide

Drag the corner, or slide along the ruler. Zoom changes the view, not your guess.

Drag corner or ruler

Controls: Drag the corner or slide along the ruler. Use − / + to zoom. With a keyboard, focus the blue board and use the arrow keys to adjust, then press Lock it in.

How to play Size It Up

Start with the reference on the left. Its label tells you the size and whether you are comparing height, length or diameter.
Resize the colored object with its corner handle or the ruler inside the blue board. The reference stays fixed while you resize. Use the − and + buttons to zoom the view without changing your guess.
Choose Lock it in. The colored shape moves to its actual size; the white silhouette keeps your guess visible.
Complete five comparisons. Later rounds carry more weight. Play another run whenever you like.

A better eye for scale

Before adjusting the silhouette, picture the reference repeated end to end. Would this object be two people tall, half a car long, or three planets wide? Judge the labeled dimension, rather than the amount of colored space.

Some comparisons use familiar objects; others ask you to compare landmarks or planets. The drawings are silhouettes that keep their original proportions. Use the measurements as your anchor.

For a different kind of visual puzzle, try Arrow Puzzle or today’s arrow challenge.

Size It Up game questions

What is Size It Up?

Size It Up is a visual size comparison game. You estimate a real-world dimension by resizing an object beside a labeled reference, then see how close your guess came. This browser version uses 1,406 silhouettes and comparison entries from PlayDaily Size It Up, with locally implemented controls.

Is Size It Up free and unlimited?

Yes. You can play unlimited five-round runs in your browser, without an account or download. New runs shuffle the comparisons. This version is an unlimited practice game; it does not have a daily puzzle limit.

How does Size It Up scoring work?

A round starts with a score from 0 to 100. An error ratio of 1.05 or less earns 100; a guess at least four times too large or too small earns 0. Between those limits, the score falls with the logarithm of the ratio error, so double and half earn equal points. The five multipliers are ×1, ×1, ×2, ×3 and ×3, making a perfect run worth 1,000 points.

Which sizes does this game use?

The comparison catalog comes from PlayDaily Size It Up and includes everyday objects, animals, vehicles, buildings and space. Measurements are representative comparison values; individual objects and animals can vary. Check whether the task compares height, length, width or diameter. This version uses the catalog’s linear comparisons, rather than country-area questions.

Can I play on a phone or with a keyboard?

Yes. Drag the corner or slide along the ruler on a touchscreen. With a keyboard, Tab to the blue board and use the arrow keys to resize; hold Shift for larger steps. The zoom buttons change the view. Tab to Lock it in and press Enter to submit.

Does it save my score?

Your highest completed run is saved on this browser when local storage is available. It does not sync across devices. You can also share or copy your five-round result.

Silhouettes and comparison catalog from Size It Up on PlayDaily. Game controls implemented locally by Arrow Puzzle; not affiliated with PlayDaily.