As per International Monetary Fund (IMF) 2019 estimates, the GDP (nominal) of Hong Kong is USD 372,989 million. This GDP (nominal) is around 0.43% of Entire World’s GDP. Currently (2019), the world rank of Hong Kong is No Rank
However, as per 2018 estimates by World Bank, the GDP (Nominal) of Hong Kong is USD 362,993 million.

Hong Kong GDP [PPP]

On the other hand, as per 2019 estimates by International Monetary Fund, the GDP (PPP) of Hong Kong is USD 490,880 Million. This is 0.35% of World.