Lisbon is about 2.7 times smaller than Taipei.

Taipei is approximately 272 sq km, while Lisbon (map shows its 24 named neighbourhoods; the area covers the whole city) is approximately 100 sq km, making Lisbon 36.81% the size of Taipei.
Tip: This to-scale comparison of Taipei vs. Lisbon 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.