Sydney is about 3.2 times smaller than Bellevue.

Bellevue is approximately 87 sq km, while Sydney is approximately 27 sq km, making Sydney 30.8% the size of Bellevue.
Tip: This to-scale comparison of Bellevue vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.