Size Comparison Game Unlimited

Five comparisons

Resize real objects. Trust your eye. See how close you get.

Opening your five comparisons…

Practice size comparison without a daily limit

Start a five-question practice round whenever you like. In each question, one object stays at a fixed size while you resize another on the same scale. Submit your estimate to see the real measurement, your error and your score before moving to the next comparison.

Is Unlimited really infinite?

There is no daily cap. After a round, choose Keep playing to start another five, as many times as you like. Your last 20 comparisons will not repeat in a new practice round, and the questions cover animals, everyday objects, vehicles, buildings and planets. Replaying a daily challenge gives you its original five questions.

Drag, adjust and inspect

Drag anywhere on the board (right or up makes the target bigger), pinch, scroll, move the slider, use the plus and minus buttons, or press the arrow keys. The view reframes itself when an object leaves it; zoom and Fit both only change the view, never your estimate. Settings let you switch between metric and imperial units or hide numbers until you lock in.

Understand the result

Each guess earns up to 100 points, for a maximum of 500 per round. Guessing half or twice the actual size gives the same score. For measurements published as a range, a guess inside the range earns full points; outside it, the nearest boundary is used. Open the source after each answer to check the measurement.

Progress stays in this browser

Your current round, recent pairs and best practice score are saved locally when browser storage is available. You can refresh and continue, review all five answers after finishing, or share your score by pressing Share score. No account is needed, and records do not sync across devices.

Looking for Size It Up unlimited?

Size It Up is Magnitudle’s daily size-estimation game; you can play it at magnitudle.com/size-it-up. This site is not affiliated with it. If you want more rounds of the same kind of challenge, this independent size comparison game has unlimited practice: resize real objects against a fixed reference and check the source of every measurement.