Currency converter to convert from Indian Rupee (INR) to Cambodian Riel (KHR) including the latest exchange rates, a chart showing the exchange rate history for the last 120-days and information about the currencies. Complete Guide to Cambodian Currency (Khmer Riel and US Dollars) in Cambodia This is a complete guide to money in Cambodia . The official currency is called Riel, but US dollars are also used all the time. You might pay for something in Cambodian Riel and then get change in US dollars, or pay for something in US dollars and get smaller Riels back as change. 1 US dollar is worth about 4,000 Cambodian Riels (you can exchange 1 USD for 4,000 Khmer Riel), so keep that in mind. You will see many ... Learn how to use Riel and USD in Cambodia , and how to exchange, withdraw, and pay with digital methods. Find out the latest rules on small and damaged USD bills, and tips for travelers. It was the official currency in Cambodia until 1975, when the Khmer Rouge took over Cambodia , abolished all forms of money, and instituted a barter economy. Following the overthrow of the Khmer Rouge in 1979, the Central Bank was reconstituted, and in 1980 the second riel was adopted as the official currency of Cambodia .