Pittsburgh is about 8 times smaller than Hong Kong.

Hong Kong is approximately 1,108 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 12.94% the size of Hong Kong.
Tip: This to-scale comparison of Hong Kong vs. Pittsburgh 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.