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

2,271 entries

#1TOP SCORE

Quiet Pebble

United Kingdom
437 / 500
Joint #2

Lucky Nimbus

United Kingdom
435 / 500
Joint #2

Rare Compass

Italy
435 / 500

The full lineup

A perfect eye scores 500.
October 4, 2026 Size It Up rankings. Equal scores share the same rank.
RankEntryCountryScore
01Quiet PebbleUnited Kingdom437 / 500
02Lucky NimbusUnited Kingdom435 / 500
02Rare CompassItaly435 / 500
04Nimble QuartzMongolia431 / 500
05Golden QuartzGermany420 / 500
06Patient QuartzTürkiye419 / 500
07Amber PlumbAustralia408 / 500
07Steady FalconTürkiye408 / 500
09Warm SpanFrance407 / 500
10Crisp LanternPoland405 / 500
11Soft CedarItaly404 / 500
12Brave CloverTürkiye403 / 500
13Calm CompassPoland402 / 500
14Merry OtterTürkiye401 / 500
15Modest LeagueSingapore399 / 500
15Merry CubitTürkiye399 / 500
17Bold HarborKazakhstan398 / 500
18Wild KernelTürkiye396 / 500
18Tiny HeronTürkiye396 / 500
20GrumeauFrance393 / 500
21Swift ThistleGermany392 / 500
22Still SpanAustralia391 / 500
23Rosa ClaireFrance390 / 500
23Sunny WillowGermany390 / 500
25Tall OtterTürkiye387 / 500
25Golden CloverPoland387 / 500
27Bold DatumSwitzerland386 / 500
27Lucky BirchGermany386 / 500
29Tiny MeadowItaly385 / 500
29Precise PloverRussia385 / 500
29Brave DatumItaly385 / 500
32Rare WillowSouth Africa384 / 500
32Quick CompassRussia384 / 500
34Merry SparrowUnited States383 / 500
34Swift MapleFrance383 / 500
34Soft FinchIndia383 / 500
37Lucky FathomItaly382 / 500
38Soft PloverIndia380 / 500
38Soft CloverItaly380 / 500
40Quiet ThistleUnited States379 / 500
41Tiny MeadowSerbia378 / 500
41Warm PlumbUnited Kingdom378 / 500
43Quick MeadowSpain377 / 500
44Modest CedarKazakhstan376 / 500
44Warm GaugePoland376 / 500
44Quiet MeadowCzechia376 / 500
44Brave ThistleAustralia376 / 500
48Silver DatumUnited Kingdom375 / 500
49Silver FalconFrance374 / 500
49Misty MarmotTürkiye374 / 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.