Atlanta is about 2.4 times smaller than Kyoto.

Kyoto is approximately 828 sq km, while Atlanta (map shows its 114 named neighbourhoods; the area covers the whole city) is approximately 350 sq km, making Atlanta 42.34% the size of Kyoto.
Tip: This to-scale comparison of Kyoto vs. Atlanta 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.