Venice is about 1.5 times smaller than Tokyo.

Tokyo is approximately 619 sq km, while Venice is approximately 415 sq km, making Venice 66.97% the size of Tokyo.
Tip: This to-scale comparison of Tokyo vs. Venice 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.