Bangkok is about 9 times bigger than San Jose.

San Jose is approximately 180 sq km, while Bangkok is approximately 1,569 sq km, making Bangkok 772% larger than San Jose.
Tip: This to-scale comparison of San Jose vs. Bangkok 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.