The Wizarding world, much like the non-magical world, possess various forms of currency that are used are a medium of exchange, and circulate throughout the Wizarding world solely in the form of metal coins. No known Wizarding nation uses banknotes as a form of currency, contrasting heavily with non-magical governments.
Known Wizarding currency
The United Kingdom of Great Britain and Northern Ireland
In the United Kingdom, Wizarding currency takes the form of the Galleon, Sickle, and Knut gold, silver, and bronze coins of varying values. The Galleon is the most valued coin in Britain, with one Galleon being equal to 17 Sickles or 493 Knuts. A Sickle is equal to 29 Knuts.
The United States of America
In the United States, Wizarding currency takes the form of the Dragot, Kraling, and Riel. The Dragot is the most valued American wizarding coin, with the Kraling and Riel following in respective value.
- Wizarding currency on Harry Potter Wiki