Bermuda is about 15 times smaller than Kiribati.

Kiribati is approximately 811 sq km, while Bermuda is approximately 54 sq km, making Bermuda 6.66% the size of Kiribati. Meanwhile, the population of Kiribati is ~114,189 people (41,852 fewer people live in Bermuda).
Tip: This to-scale comparison of Kiribati vs. Bermuda uses the Mercator projection, which distorts the size of regions near the poles.