Saint Vincent and the Grenadines is about 1.3 times bigger than Maldives.

Maldives is approximately 298 sq km, while Saint Vincent and the Grenadines is approximately 389 sq km, making Saint Vincent and the Grenadines 31% larger than Maldives. Meanwhile, the population of Maldives is ~390,164 people (289,195 fewer people live in Saint Vincent and the Grenadines).
Tip: This to-scale comparison of Maldives vs. Saint Vincent and the Grenadines uses the Mercator projection, which distorts the size of regions near the poles.