As per International Monetary Fund (IMF) 2019 estimates, the GDP (nominal) of Iran is USD 458,500 million. This GDP (nominal) is around 0.53% of Entire World’s GDP. Currently (2019), the world rank of Iran is 25 in terms of GDP Nominal.
However, as per 2018 estimates by World Bank, the GDP (Nominal) of Iran is USD 454,013 (2017) million. As per World Bank Estimates, the global rank of Iran is 27.
On the other hand, as per 2019 estimates by International Monetary Fund, the GDP (PPP) of Iran is USD 1,470,661 Million. This is 1.04% of World. Iran on this basis has a global rank of 18.