Pittsburgh is about 1.2 times smaller than Amsterdam.

Amsterdam is approximately 166 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 86.52% the size of Amsterdam.
Tip: This to-scale comparison of Amsterdam 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.