Size It Up Unlimited

Each run has 5 rounds. In every round two things stand on the same ground line: the reference, shown at its real size with its measurement, and a target that starts at the wrong size. Drag the target’s corner handle or the ruler until it looks as big as you think it really is, then press Lock in. The target jumps to its real size, your guess stays as a dashed box, and you see how far off you were and what it scored.

Every round is worth up to 100 points, so a run is out of 500. A guess within 5% of the real size scores 100. A guess that is 3 times too big or too small, or worse, scores 0. In between, the score falls in an even line on a log scale: for example, a guess 1.4 times too small scores 73. Each Hint you use takes 20 off the most that round can score.

Yes. Press Next for a new run of 5 rounds at the same level as often as you like, with no sign-up and no daily limit. Switch to Daily if you want the one run everybody gets today. Easy pairs things 1.5 to 6 times apart, Medium 2 to 15 times, and Hard 3 to 30 times.

No. Scoring is by ratio, so a guess twice the real size and a guess half of it score exactly the same. After each lock you see which way you were off, for example “1.4× too small”, so you can notice whether you lean one way.

One measurement at a time, and never the area. Every object in the game is measured one way: its height, its length, its diameter or its wingspan. The name tag under the target says which, for example “Blue whale · length”, and the reference’s tag gives its measurement in metres and feet, or centimetres and inches for small things. On Easy and Medium both things are measured the same way. Hard can set a height against a length.

A different site. The Dles is an independent site. We wrote this version ourselves, with our own objects, drawings and scoring, and it is not affiliated with or endorsed by the original game’s makers.

It may be. Size-guessing games under this name and idea turn up on several sites and in short videos, so we cannot tell which one you saw. This one is ours: 5 rounds, a handle and a log ruler, scored out of 500 by how far off you were, with a new run every time you press Next.

No. Take as long as you like on every round: there is no timer on the page, and a run is scored only on how close each guess is to the real size, so waiting does not cost points. Hint is the one thing that does, at 20 points off that round.

Yes. Click or tab to the picture, then press the right or up arrow to make the target bigger by 2%, and the left or down arrow to make it smaller. Hold Shift with an arrow for 10% steps, and press Enter to lock in your guess.

Yes. There is no account to make. Your best score for each level is kept in this browser, and so are your streak and the run you are in the middle of, so a refresh puts you back in the same round. Clearing this site’s data in your browser also clears them.