Ho Chi Minh City is about 48 times bigger than Kaiserslautern.

Kaiserslautern is approximately 140 sq km, while Ho Chi Minh City is approximately 6,773 sq km, making Ho Chi Minh City 4,748% larger than Kaiserslautern.
Tip: This to-scale comparison of Kaiserslautern vs. Ho Chi Minh City 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.