size it up.

A little perspective

Trust your eye.

Five comparisons. Two objects each time. How close can you get?

  1. Compare

    The object on the left is your measuring stick. Keep resizing — the view automatically zooms out when you need more room. You can also zoom the canvas; both objects scale together without changing your estimate.

  2. Find the right size

    Drag the blue handle, scroll while hovering it, tap − / +, or use the arrow keys. Match the dimension in the question.

  3. Lock it in

    Reveal the real size and earn up to 100 points. Five rounds add up to a maximum of 500.

The first answer in each round counts. A new challenge arrives every day at 00:00 UTC. Object sizes use the specific examples shown in the answer.

Read the full rules and scoring guideLet’s play

THE LEADERBOARD

See how you
measure up.

Good eyes. Small margins. A little friendly competition.

5rounds500possible points
Make your mark

A fresh challenge at 00:00 UTC

CHOOSE A DATE
October 2026
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Daily challenges follow UTC.Go to today
Back to today

The day’s best eyesFinal

256 entries

#1TOP SCORE

Precise Lantern

375 / 500
#2

Keen Compass

366 / 500
#3

Steady Falcon

357 / 500

The full lineup

A perfect eye scores 500.
September 27, 2026 Size It Up rankings. Equal scores share the same rank.
RankEntryCountryScore
01Precise Lantern375 / 500
02Keen Compass366 / 500
03Steady Falcon357 / 500
04Quiet Cedar344 / 500
05Merry Falcon339 / 500
06Amber Notch333 / 500
07Still Heron331 / 500
08Lucky Notch330 / 500
09Tall Span327 / 500
10Misty Marmot326 / 500
11Warm Willow325 / 500
12Crisp Maple324 / 500
13Lucky Otter323 / 500
14Amber Maple321 / 500
15Brave Plumb320 / 500
16Modest Thistle319 / 500
17Tiny Cubit318 / 500
17Warm Harbor318 / 500
19Wild Cedar317 / 500
20Calm Lantern314 / 500
21Steady Lantern313 / 500
22Patient Datum312 / 500
22Amber Kernel312 / 500
24Modest Lantern311 / 500
24Silver Gauge311 / 500
26Quiet Nimbus309 / 500
26Lucky Badger309 / 500
28Brave Birch308 / 500
28Bold Maple308 / 500
28Still Harbor308 / 500
31Silver Otter306 / 500
32Crisp SparrowGermany305 / 500
33Quiet Span304 / 500
34Precise Willow303 / 500
35Bright Notch302 / 500
35Silver LeagueGermany302 / 500
37Nimble Falcon301 / 500
38Calm Marmot300 / 500
39Golden Thistle299 / 500
40Precise Plumb295 / 500
41Soft Quartz294 / 500
42Gentle Otter293 / 500
43Bold Marmot289 / 500
44Quiet Notch288 / 500
44Calm Heron288 / 500
46Merry Plumb287 / 500
46Merry PlumbTürkiye287 / 500
46Curious Otter287 / 500
49Nimble Cubit286 / 500
49Calm NimbusUnited Kingdom286 / 500

Showing the top 50 entries.

This day is closed. Play today

Five rounds. 500 possible points. Equal scores share a rank.

How the leaderboard works

Your first completed challenge counts. Completed daily challenges automatically join the leaderboard with your current nickname; no sign-in is needed. You can edit your nickname, avatar, and country or region from your profile. Your connection may supply an initial country or region for the flag. Your email is never shown. Daily challenges close at 00:00 UTC. Earlier leaderboards remain available, but no longer accept scores. Monthly rankings follow the UTC calendar month.