Anaheim is about 4.8 times smaller than Tokyo.

Tokyo is approximately 619 sq km, while Anaheim is approximately 130 sq km, making Anaheim 21.04% the size of Tokyo.
Tip: This to-scale comparison of Tokyo vs. Anaheim 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.