Chemnitz is about 2.7 times smaller than Madrid.

Madrid is approximately 604 sq km, while Chemnitz is approximately 221 sq km, making Chemnitz 36.58% the size of Madrid.
Tip: This to-scale comparison of Madrid vs. Chemnitz 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.