Isle of Man is about 923 times smaller than Yemen.

Yemen is approximately 527,968 sq km, while Isle of Man is approximately 572 sq km, making Isle of Man 0.11% the size of Yemen. Meanwhile, the population of Yemen is ~41.8 million people (41.7 million fewer people live in Isle of Man).
Tip: This to-scale comparison of Yemen vs. Isle of Man 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.