Bangkok is about 23 times bigger than Winterthur.

Winterthur is approximately 68 sq km, while Bangkok is approximately 1,569 sq km, making Bangkok 2,205% larger than Winterthur.
Tip: This to-scale comparison of Winterthur 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.