Oklahoma is about 2.1 times smaller than Japan.

Japan is approximately 377,915 sq km, while Oklahoma is approximately 177,847 sq km, making Oklahoma 47.06% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (120.5 million fewer people live in Oklahoma).
This to-scale comparison of Japan vs. Oklahoma uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

Share this