Pittsburgh is about 1.4 times bigger than Paris.

Paris is approximately 105 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 36% larger than Paris.
Tip: This to-scale comparison of Paris 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.