Size It UpDaily

One number. One guess.

Size It Up: Daily Estimate

Put a number on your intuition. One fresh question and one official guess each day.

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Today’s challengeRound 1 of 5
0 / 500

How large is the target compared with the reference?

Navy stays fixed. Resize red.

Two labeled objects appear on a shared baseline. Adjust the target object until its displayed size matches its real-world scale relative to the reference.

The fixed reference is on the left and the resizable target is on the right. Use the scale control or arrow keys, then lock in your estimate.

1x

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The game in focus

How to play Daily Estimate

Read the unit carefully. Use K, M or B for large values, or work through a calculation in the private scratchpad. Scores use proportional error, so large and small quantities are judged fairly.

Daily Estimate resets at 00:00 UTC. Your guess is saved in this browser; earlier dates are available in the archive. Measurement notes →

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