Falkland Islands (Islas Malvinas) is about 1.9 times smaller than Belize.

Belize is approximately 22,966 sq km, while Falkland Islands (Islas Malvinas) is approximately 12,173 sq km, making Falkland Islands (Islas Malvinas) 53.0% the size of Belize. Meanwhile, the population of Belize is ~412,387 people (409,189 fewer people live in Falkland Islands (Islas Malvinas)).
Tip: This to-scale comparison of Belize vs. Falkland Islands (Islas Malvinas) uses the Mercator projection, which distorts the size of regions near the poles.