PrestaShop can accept a large number of currencies. By default, there is only one standard currency: the one for your country. However, you can add and configure new currencies depending on your customers' needs. Indeed, customers will appreciate the ability to display your shop's prices in their country's currency.
This page is very simple yet essential, as relate to your currencies exchange rates (or "conversion rates"). To quote Wikipedia, "in finance, an exchange rate between two currencies is the rate at which one currency will be exchanged for another. It is also regarded as the value of one country’s currency in terms of another currency". Rates change daily, sometimes drastically depending on current events, and your shop should always be updated to the latest values.
In order to change the default currency, you must go to the "Localization" page of the "Localization" menu and use the "Default currency" option from the "Configuration" section.
You can update the currency rate by clicking on the "Update" button in the "Exchange rate" frame. This will download the update file from the PrestaShop website's servers, using PrestaShop web-service.
|Note that the rates are provided as-is: the PrestaShop team does pay attention to have correct rates in these files, but might slightly differ from the actual ones, if only because these rates can fluctuate greatly in a short time.|
The easiest way to add a country's currency is to import its localization package. This is done in the "Localization" page, under the "International" menu. Once imported, you must go to the "Currencies" page to enable it. You might need to add a currency not featured in any the localization packages. In that case, you can use the creation form. Click on "Add new currency", and a new page opens: