Buenos Aires is about 1.3 times smaller than Taipei.

Taipei is approximately 272 sq km, while Buenos Aires is approximately 203 sq km, making Buenos Aires 74.8% the size of Taipei.
Tip: This to-scale comparison of Taipei vs. Buenos Aires 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.