The Euro is used by the institutions of the European Union and is formed by Germany, Austria, Belgium, Estonia, Finland, France, Netherlands, Ireland, Spain, Italy, Cyprus, Latvia, Lithuania, Luxembourg, Malta, Portugal, Slovakia, Slovenia, and Greece. It is the official currency of the euro area.

In addition, the Euro, which is still in use in four European countries (Andorra, Monaco, San Marino, and the Vatican), is used by approximately 343 million Europeans every day as of 2018. In addition, as of 2020, 240 million people worldwide - including 190 million people in Africa - use euro-pegged currencies.