Open Exchange Rates API
Open Exchange Rates API is a RESTful web service that provides real-time and historical foreign exchange (forex) rates for over 200 currencies. It offers JSON-based endpoints for developers to integrate currency conversion, exchange rate data, and financial calculations into applications. The service includes features like live updates, historical data back to 1999, and support for various base currencies.
Developers should use this API when building applications that require accurate currency conversion, such as e-commerce platforms, financial dashboards, travel booking sites, or international payment systems. It's particularly useful for handling multi-currency transactions, displaying real-time exchange rates, or performing historical financial analysis, as it provides reliable, frequently updated data with a simple integration process.