Sydney is about 1.9 times smaller than Santa Barbara.

Santa Barbara is approximately 50 sq km, while Sydney is approximately 27 sq km, making Sydney 52.9% the size of Santa Barbara.
Tip: This to-scale comparison of Santa Barbara 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.