Open Exchange Rates provides a simple, lightweight and portable JSON API with live and historical foreign exchange (forex) rates for 170 world currencies, via a simple and easy-to-integrate API, in JSON format. Data are tracked and blended algorithmically from multiple reliable sources, ensuring fair and unbiased consistency.

Exchange rates published through the Open Exchange Rates API are collected from multiple reliable providers, blended together and served up in JSON format for everybody to use. There are no complex queries, confusing authentication methods or long-term contracts.

Open Exchange Rates