Pittsburgh is about 37 times smaller than Istanbul.

Istanbul is approximately 5,343 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 2.68% the size of Istanbul.
Tip: This to-scale comparison of Istanbul 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.