Tokyo is about 2.4 times smaller than Mexico City.

Mexico City is approximately 1,485 sq km, while Tokyo is approximately 619 sq km, making Tokyo 41.68% the size of Mexico City.
Tip: This to-scale comparison of Mexico City vs. Tokyo 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.