Help
How is the Size It Up score calculated?
Each visual round compares your estimate with the recorded target measurement. An estimate within 6 % earns 100 points; larger errors earn fewer, down to zero when the guess is about five times too big or too small. Five rounds add up to 500 points.
When does the daily game refresh?
A new daily game opens at midnight according to your browser's local time. Completed daily games stay complete; use an earlier archive date for repeatable practice.
Is Size It Up free, and do I need an account?
It is free to play without signing in or downloading an app. JavaScript is needed for the interactive board. Your progress, streaks and personal bests stay in this browser.
Where do the measurements come from?
Each object carries a single recorded measurement, a height, length, wingspan, diameter or depth, taken from public reference sources and rounded sensibly. Characters and idols use the figures published by their franchises or agencies.
Why does zooming not change my score?
Zooming only changes how the board is displayed. Both silhouettes scale together, so the ratio between them is unchanged. Only resizing the red target changes your answer.
Can I see feet and pounds instead of metres?
Yes. The m · kg button in the header switches every measurement on the site to feet, inches, pounds and miles, and it remembers your choice in this browser. Nothing recorded changes: only the way it is printed does, so a fact keeps the figure its source published and shows the imperial equivalent in brackets beside it.
Controls
- Drag the red knob (or the red silhouette) to resize the target.
- Use the slider, or press ↑ / ↓ for fine steps and Shift + ↑ / ↓ for big ones.
- Scroll on the board or use the + / − buttons to zoom. Zoom never changes your answer.
- Press Enter to lock in and Enter again for the next round.