Leu to Euro Converter. From: To: RON Leu. EUR Euro ⇆ Info about Leu and Euro. The Leu is the currency of Romania. The currency code for Leu is RON, and the currency symbol is lei. The Euro is the currency of European Union. The currency code for Euro is EUR, and the currency symbol is €. Currency converter to convert from Euro (EUR) to Romanian Leu (RON) including the latest exchange rates, a chart showing the exchange rate history for the last 120-days and information about the currencies.