Solomon Islands is about 1,376 times bigger than Nauru.

Nauru is approximately 21 sq km, while Solomon Islands is approximately 28,896 sq km, making Solomon Islands 137,500% larger than Nauru. Meanwhile, the population of Nauru is ~9,811 people (692,883 more people live in Solomon Islands).
Tip: This to-scale comparison of Nauru vs. Solomon Islands 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.