Arlington is about 3.6 times smaller than Berlin.

Berlin is approximately 891 sq km, while Arlington is approximately 248 sq km, making Arlington 27.86% the size of Berlin.
Tip: This to-scale comparison of Berlin vs. Arlington 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.