Pittsburgh is about 6 times smaller than Dallas.

Dallas is approximately 880 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 16.31% the size of Dallas.
Tip: This to-scale comparison of Dallas 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.