Vienna is about 3.6 times bigger than Manchester.

Manchester is approximately 116 sq km, while Vienna is approximately 415 sq km, making Vienna 259% larger than Manchester.
Tip: This to-scale comparison of Manchester vs. Vienna 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.