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

1,679 entries

#1TOP SCORE

Bold Fathom

Australia
458 / 500
#2

Crisp Span

United Kingdom
447 / 500
#3

Lucky Cubit

France
436 / 500

The full lineup

A perfect eye scores 500.
September 29, 2026 Size It Up rankings. Equal scores share the same rank.
RankEntryCountryScore
01Bold FathomAustralia458 / 500
02Crisp SpanUnited Kingdom447 / 500
03Lucky CubitFrance436 / 500
04Golden PlumbSpain434 / 500
05Still Willow426 / 500
06Steady Compass423 / 500
07Modest Badger422 / 500
08Tiny Finch421 / 500
08Keen Heron421 / 500
10Bold MapleGermany420 / 500
11Swift NimbusTürkiye415 / 500
12Merry Lantern413 / 500
12Modest Cubit413 / 500
12Tall KernelItaly413 / 500
15Nimble Quartz410 / 500
16Bold Sparrow409 / 500
17Steady BirchSpain405 / 500
18Still LanternGermany404 / 500
19Bold LeagueBrazil403 / 500
19Lucky QuartzTürkiye403 / 500
21Amber Span402 / 500
21Keen Quartz402 / 500
21Amber Maple402 / 500
21Soft GaugeCzechia402 / 500
25Lucky OtterPoland401 / 500
26Still NotchSpain400 / 500
27Golden Plover399 / 500
28Keen Clover398 / 500
28Silver CloverGermany398 / 500
30Quiet OtterTürkiye397 / 500
31Calm Meadow396 / 500
31Gentle MarmotGermany396 / 500
33Warm Compass395 / 500
33Amber League395 / 500
33Gentle ThistleDenmark395 / 500
33Patient MapleNetherlands395 / 500
37Misty Gauge394 / 500
37Still Finch394 / 500
37Steady Plover394 / 500
40Lucky Finch393 / 500
41Tall BadgerGermany392 / 500
42Swift Compass391 / 500
42Warm Heron391 / 500
42Soft Badger391 / 500
45Sunny LanternIndia390 / 500
46Wild Lantern389 / 500
46Still Heron389 / 500
46Gentle WillowFrance389 / 500
49Sunny Falcon388 / 500
50Silver Plover387 / 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.