True-scale comparisons

Two objects on one blueprint. Each page starts with a warm-up round so you can guess before you peek.

🐘 Animals

Giraffe vs Double-decker bus 1.3×Blue whale vs Tyrannosaurus rex 2.0×

🗼 Landmarks

Burj Khalifa vs Eiffel Tower 2.5×Eiffel Tower vs Statue of Liberty 3.5×

🚀 Vehicles

Icon of the Seas vs RMS Titanic 1.4×Airbus A380 vs Boeing 747 1.0×

🪐 Space

Earth vs The Moon 3.7×Jupiter vs Earth 11.0×

🌲 Nature

Mount Everest vs Burj Khalifa 10.7×

How Size It Up works

  1. Look. The solid blue shape is your yardstick — drawn at true scale, with its real size marked.
  2. Stretch. Drag across the board (or pinch, slide, use ← →) to resize the dashed white outline until it feels right.
  3. Measure! The real size snaps in as a yellow outline. Your accuracy earns up to ★★★.

Five shapes a day, the same for everyone. Can you get all 15 stars?

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