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
September 2026
2627282930
Daily challenges follow UTC.Go to today
Back to today

The day’s best eyesFinal

2,886 entries

#1TOP SCORE

Merry Nimbus

Denmark
438 / 500
#2

Sunny Quartz

France
432 / 500
Joint #3

Bold Gauge

Argentina
428 / 500

The full lineup

A perfect eye scores 500.
October 6, 2026 Size It Up rankings. Equal scores share the same rank.
RankEntryCountryScore
01Merry NimbusDenmark438 / 500
02Sunny QuartzFrance432 / 500
03Bold GaugeArgentina428 / 500
03Amber PlumbAustralia428 / 500
05Warm SparrowUnited Kingdom426 / 500
06Sunny ThistleAustria423 / 500
07Silver CompassSwitzerland419 / 500
07Steady CubitTürkiye419 / 500
09Steady MapleGermany416 / 500
10Silver HarborHungary414 / 500
11Bold MarmotGermany412 / 500
12Still CompassUnited States411 / 500
12Quick FalconNorway411 / 500
12Quick SpanUnited States411 / 500
12Soft HeronUnited States411 / 500
16Steady ThistleMexico410 / 500
17Rare GaugeUnited States409 / 500
18Patient MarmotUnited States408 / 500
19Patient CompassTürkiye407 / 500
20Modest FinchGermany406 / 500
21Sunny FalconRussia405 / 500
22Misty CompassUnited States404 / 500
23Rare NimbusAustralia402 / 500
24Swift MeadowGermany401 / 500
24Lucky CompassGermany401 / 500
26Misty BirchMongolia400 / 500
26Crisp HarborNetherlands400 / 500
28Crisp LeagueGermany399 / 500
29Bright QuartzKazakhstan398 / 500
29Brave CubitNetherlands398 / 500
31Rare SpanUnited States397 / 500
31Tall SparrowSpain397 / 500
33Precise LeagueAustria394 / 500
33Warm FinchSpain394 / 500
33Still CubitGermany394 / 500
36Curious CedarGermany392 / 500
37Curious FinchCanada391 / 500
37Lucky KernelMongolia391 / 500
37Bold CompassUkraine391 / 500
37Tall ThistleTürkiye391 / 500
41Bright BirchGermany390 / 500
42Wild LeagueMongolia389 / 500
42Sunny PebbleAlbania389 / 500
44Crisp GaugeUnited States387 / 500
44Bright CloverUnited States387 / 500
46Lucky LanternItaly386 / 500
46Keen FinchTürkiye386 / 500
46Tall QuartzGermany386 / 500
49Swift QuartzSwitzerland385 / 500
49Gentle KernelSpain385 / 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.