Palau is about 40 times smaller than New Caledonia.

New Caledonia is approximately 18,575 sq km, while Palau is approximately 459 sq km, making Palau 2.47% the size of New Caledonia. Meanwhile, the population of New Caledonia is ~297,160 people (275,465 fewer people live in Palau).
Tip: This to-scale comparison of New Caledonia vs. Palau 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.