Saint Vincent and the Grenadines is about 1.4 times bigger than Geneva.

Geneva (including the canton) is approximately 282 sq km, while Saint Vincent and the Grenadines is approximately 389 sq km, making Saint Vincent and the Grenadines 38% larger than Geneva.
Tip: This to-scale comparison of Geneva vs. Saint Vincent and the Grenadines uses the Mercator projection, which distorts the size of regions near the poles.