Tokyo is about 4 times bigger than Honolulu.

Honolulu is approximately 157 sq km, while Tokyo is approximately 619 sq km, making Tokyo 295% larger than Honolulu.
Tip: This to-scale comparison of Honolulu 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.