New York City is about 9 times bigger than Fort Lauderdale.

Fort Lauderdale (excluding the city's 9.9 sq km of water area) is approximately 90 sq km, while New York City (including all five boroughs: Manhattan, Brooklyn, Queens, The Bronx, and Staten Island) is approximately 781 sq km, making New York City 768% larger than Fort Lauderdale.
Tip: This to-scale comparison of Fort Lauderdale vs. New York City uses the Mercator projection, which distorts the size of regions near the poles.