Phoenix is about 1.9 times bigger than Micronesia, Federated States of.

Micronesia, Federated States of is approximately 702 sq km, while Phoenix is approximately 1,342 sq km, making Phoenix 91% larger than Micronesia, Federated States of.
Tip: This to-scale comparison of Micronesia, Federated States of vs. Phoenix uses the Mercator projection, which distorts the size of regions near the poles.