Sydney is about 4.9 times smaller than Long Beach.

Long Beach is approximately 131 sq km, while Sydney is approximately 27 sq km, making Sydney 20.34% the size of Long Beach.
Tip: This to-scale comparison of Long Beach 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.