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

3,017 entries

#1TOP SCORE

Quiet Span

Germany
439 / 500
#2

Gentle Badger

Germany
435 / 500
#3

Precise Pebble

Germany
433 / 500

The full lineup

A perfect eye scores 500.
October 1, 2026 Size It Up rankings. Equal scores share the same rank.
RankEntryCountryScore
01Quiet SpanGermany439 / 500
02Gentle BadgerGermany435 / 500
03Precise PebbleGermany433 / 500
04Nimble LeagueSweden430 / 500
05Lucky MeadowSerbia427 / 500
06Nimble SparrowItaly425 / 500
06Misty CloverGermany425 / 500
08Quick SparrowBelarus424 / 500
09Calm PebbleGermany417 / 500
10Precise PebbleGermany416 / 500
11Misty QuartzAustralia414 / 500
12Nimble FinchAustralia413 / 500
13Warm HarborGermany411 / 500
14Modest PloverGermany410 / 500
15Warm PlumbUnited States409 / 500
16Bright NimbusUnited States403 / 500
16Soft PlumbItaly403 / 500
18Precise MapleSpain402 / 500
18Keen NimbusTürkiye402 / 500
20Tiny QuartzUnited States400 / 500
21Swift BirchSpain399 / 500
22Swift ThistleLatvia398 / 500
22Amber CloverArgentina398 / 500
24Rare BirchPoland397 / 500
24Tall CompassGermany397 / 500
24Silver HarborGermany397 / 500
24Still ThistleUnited States397 / 500
28Tiny NimbusFrance395 / 500
29Lucky MeadowFrance393 / 500
29Amber PloverUnited Kingdom393 / 500
29Wild CompassCzechia393 / 500
32Curious PlumbUnited States392 / 500
32Brave CubitRussia392 / 500
32Bold FinchTürkiye392 / 500
35Modest PebbleSpain391 / 500
35Silver KernelItaly391 / 500
37Sunny OtterFrance390 / 500
37Tiny SparrowNew Zealand390 / 500
39Steady NotchPoland388 / 500
39Sunny CloverPoland388 / 500
41Misty SpanItaly387 / 500
41Keen NimbusUnited Kingdom387 / 500
41Silver CubitGermany387 / 500
41Tiny WillowUnited States387 / 500
41Patient GaugeUnited States387 / 500
46Lucky CompassPoland386 / 500
47Sunny LanternAustralia385 / 500
47Silver CedarPoland385 / 500
47Warm NimbusGermany385 / 500
47Tiny WillowGermany385 / 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.