The Most and Least Valuable Currencies in the World
Some currencies are worth several dollars each; others take tens of thousands to equal a single dollar. But a high or low number tells you less than you’d think.
The “most valuable” by exchange rate
Measured per unit, the Kuwaiti dinar, Bahraini dinar and Omani rial sit at the top — one unit buys several US dollars. These are typically oil-rich states that peg their currency at a high value.
The “least valuable” by exchange rate
At the other end, currencies like the Iranian rial, Vietnamese dong and some others trade at thousands or tens of thousands per dollar — often the legacy of past inflation that never redenominated.
Why the number doesn’t mean strength
A currency with a big “per dollar” number isn’t “weak,” and a high-value unit isn’t “strong.” It’s just the unit size chosen. The Japanese yen trades at over a hundred per dollar, yet Japan is a wealthy economy. What matters is stability — whether the currency holds its value over time — not the headline exchange figure. This is exactly what purchasing power parity helps untangle.
See for yourself
Our converter covers 150+ currencies — compare any of them against the dollar, euro or pound and watch how wildly the unit sizes differ.