OpenRates [JSON API]

OpenRates delivers accurate and up-to-date exchange rate data for 32 world currencies in JSON format. All currency data is sourced from the European Central Bank and updated daily at around 4:00pm CET.

The OpenRates API also offers historical exchange rates back to the year of 1999, supports HTTPS and is powered by a rock-solid infrastructure.

Using the API

Query the API for the latest available exchange rates.

Query the API for historical exchange rate data as of the year 1999.

The default base currency is Euro. In order to change the base currency, simply append the base parameter and set it to your preferred 3-letter currency code.

You can also limit the API result to specific currencies. In order to do so, specify the symbols parameter and set it to your preferred list of comma-separated 3-letter currency codes.

The OpenRates API also supports cross-domain JSONP requests. Simply add the callback parameter to your request and set it to your preferred function name.

All queries can also be made using HTTPS.