Japan is about 14 times bigger than Rwanda.

Rwanda is approximately 26,338 sq km, while Japan is approximately 377,915 sq km, making Japan 1,335% larger than Rwanda. Meanwhile, the population of Rwanda is ~14.6 million people (108.8 million more people live in Japan).
Tip: This to-scale comparison of Rwanda vs. Japan 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.