Top 10 Most Valuable Currencies in the World: Did you know that the US Dollar, which is said to be the most widely traded currency in the world and widely used as a reserve currency, is not the most valuable currency in the world? In fact, 1 US Dollar can buy just 0.31 units of the Kuwaiti Dinar, the most valuable currency in the world. Even the Euro does not make it into the top 5 rankings. So, what are the top 10 most valuable currencies and how much is the Indian Rupee worth against the US Dollar? This ranking is based only on how many units of the US Dollar you can buy with 1 unit of the currency. It does not take into account what you can buy with 1 unit of local currency either in the country or abroad. Let’s take a look.