The daily size-estimation game
Sizedle. How big is it, really?
Five silhouettes a day. Resize each one until it looks right beside a known reference, then lock in. Same five rounds for everyone, a new set at your local midnight.
Your eye versus the tape measure.
Sizedle deals five comparisons a day. On the left is a reference you already know — a person, a bus, a tennis court. On the right is today's target at whatever size you say it is. Slide until it looks right, lock in, and find out how close your mental ruler really is.
- ResizeDrag the stage, scroll, or use the slider until the silhouette looks right.
- Lock inThe true outline appears in red. Within 6% of the real size is a perfect round.
- CompareFive rounds, 100 points each. Share a score out of 500.
Frequently asked
Is everyone playing the same five rounds?
Yes. The five rounds are chosen from the object pool with today's local date as the seed, so every player on that calendar day gets the same pairs. A new set starts at midnight where you are.
How is each round scored?
The slider sets an implied size. Being twice as big and half as big are the same miss. Within 6% scores 100, and each of the five rounds is worth up to 100, so a perfect day is 500. Details on the how to play page.
Do I need an account?
No. Your streak and best score live in this browser's local storage and never leave your device.
What is a practice set?
A random five-round set drawn on the spot, scored the same way but never touching your daily result or streak.