When the euro launched (1999 electronic, 2002 cash), it replaced national currencies of the initial 12 Eurozone members. Each had distinct history, denominations, and conversion rates (irrevocably fixed Dec 31, 1998).
| Country | Currency | Code | Euro Conversion Rate (1 EUR = ) |
|---|---|---|---|
| Germany | Deutsche Mark | DEM | 1.95583 |
| France | French Franc | FRF | 6.55957 |
| Italy | Italian Lira | ITL | 1936.27 |
| Spain | Spanish Peseta | ESP | 166.386 |
| Netherlands | Dutch Guilder | NLG | 2.20371 |
| Belgium | Belgian Franc | BEF | 40.3399 |
| Austria | Austrian Schilling | ATS | 13.7603 |
| Portugal | Portuguese Escudo | PTE | 200.482 |
| Finland | Finnish Markka | FIM | 5.94573 |
| Ireland | Irish Pound | IEP | 0.787564 |
| Luxembourg | Luxembourg Franc | LUF | 40.3399 |
| Greece | Greek Drachma | GRD | 340.750 |
Bulgaria (Lev), Czechia (Koruna), Denmark (Krone — opt-out), Hungary (Forint), Poland (Złoty), Romania (Leu), Sweden (Krona — de facto opt-out).
Vatican, Monaco, San Marino, Andorra: used partner currencies (Italian, French, Spanish) → euro. Kosovo, Montenegro: unilaterally adopted euro (not EU members).