Guam is about 4,378 times smaller than Algeria.

Algeria is approximately 2,381,740 sq km, while Guam is approximately 544 sq km, making Guam 0.02% the size of Algeria. Meanwhile, the population of Algeria is ~47.4 million people (47.3 million fewer people live in Guam).
Tip: This to-scale comparison of Algeria vs. Guam 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.