Sydney is about 2.2 times smaller than Pasadena.

Pasadena is approximately 59 sq km, while Sydney is approximately 27 sq km, making Sydney 44.9% the size of Pasadena.
Tip: This to-scale comparison of Pasadena 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.