Dublin is about 3.6 times smaller than Barbados.

Barbados is approximately 430 sq km, while Dublin is approximately 118 sq km, making Dublin 27.4% the size of Barbados.
Tip: This to-scale comparison of Barbados vs. Dublin 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.