Barcelona is about 76,419 times smaller than Australia.

Australia is approximately 7,741,220 sq km, while Barcelona is approximately 101 sq km, making Barcelona 0.0% the size of Australia.
Tip: This to-scale comparison of Australia vs. Barcelona 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.