Los Angeles is about 4.5 times bigger than Taipei.

Taipei is approximately 272 sq km, while Los Angeles (including the city proper only) is approximately 1,215 sq km, making Los Angeles 347% larger than Taipei.
Tip: This to-scale comparison of Taipei vs. Los Angeles 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.