SizeGuess

About SizeGuess

SizeGuess tests how well you can picture the real size of things. On each round a dark green silhouette stands on the ground line with its real measurement written underneath, and a red silhouette of something else stands beside it. You pull the corner of the red one, drag a slider or press the arrow keys until it looks the right size next to the reference, then lock in your guess.

The daily five is the shared challenge: five rounds, numbered by day, the same for everyone, with a running score out of 500. The label above each object says which dimension counts, height for a tower or length for a court, so reading it before you resize matters. After each guess the true size is drawn in, and the game gives you a comparison to carry into the next round.

Beyond the daily, the site has Unlimited play, a Survival mode and a Countries mode where you compare the size of nations, plus a library of collections: animals, dinosaurs, landmarks, vehicles, space, everyday objects, geography and nature. A separate comparison tool lets you line up real objects, and your own height, on one scale. You can switch the units between metres and feet and inches.

The daily plays with no sign-up. It suits anyone who likes estimation games but would rather judge by eye than type a number, and the objects range from a tennis ball to planets.

How to play SizeGuess

1. Open sizeguess.com and stay on the Daily tab to start the daily five.
2. Choose metres or feet and inches from the units menu.
3. Read the reference on the left: its name, which dimension is measured and its real size.
4. Check which dimension of the red object you are estimating, its height or its length.
5. Pull the corner of the red silhouette, drag the slider or use the arrow keys until it looks the right size beside the reference.
6. Press Lock in my guess to see the true size and your points, then go on to the next round.
7. After five rounds, compare your score out of 500 or send a challenge to a friend.

Screenshots

Tips

• Use the reference as a ruler: count how many times it would fit along the object you are sizing.
• Check whether the round asks for height or length; a long, low object sized by height comes out far too small.
• Use Fit view or zoom out when the object you are sizing is much bigger than the reference, so you can see both whole.
• Play a few Unlimited rounds in one collection, such as dinosaurs or space, to learn the sizes that come up there.

Questions