San Diego is around the same size as Kyoto.

Kyoto is approximately 828 sq km, while San Diego is approximately 844 sq km, making San Diego 2% larger than Kyoto.
Tip: This to-scale comparison of Kyoto vs. San Diego 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.