Open Exchange Rates
Currency data API providing reliable exchange rates and currency conversion for businesses.
Trusted By
100,000+ developers
Currencies Supported
200+
In Service Since
2011
Open-Source Libraries
200+
About Open Exchange Rates
Open Exchange Rates delivers a robust and clean API for currency data, trusted by major brands and Fortune 500 companies. The service provides real-time and historical exchange rates for over 200 world currencies, along with time-series and currency conversion functionalities. Built by developers, it emphasizes simplicity with data served in a transparent JSON format and is supported by clear documentation. Integration is simplified with over 200 open-source libraries and plugins for most languages and frameworks. The platform is designed to be highly scalable, accommodating clients from small startups to large enterprises with high-volume needs.
API Features
Latest Rates
Get the most recent exchange rates for all currencies.
Historical Rates
Query daily end-of-day rates for any date since 1999.
Currency Conversion
A simple endpoint to convert any amount between currencies.
Time-Series Data
Request exchange rates for a given currency over a period of time.
Data Format
Clean and simple JSON format.
Developer Experience
Authentication
Simple authentication using an App ID (API Key).
Integrations
Over 200 open-source libraries and plugins for most languages and frameworks.
Scalability
Infrastructure designed to handle from a single request per month to hundreds per second.
Support
Quick technical support for developers.