Open Exchange Rates
by docs.openexchangerates.org
Currency and finance
Added on November 1st, 2026
Visit docs.openexchangerates.org →
What it does
Open Exchange Rates gives current and historical exchange rates for world currencies as JSON, for price conversion in shops, invoices and finance apps. Call endpoints such as latest.json or historical/.json with an app ID to get a table of rates. Paid plans add more requests, faster updates, a choice of base currency and extra endpoints. Free with a free API key, for 1,000 requests a month with hourly updated rates.
At a glance
- API key
- Needed, free · More APIs with a free key
- Pricing
- Free with a free API key, for 1,000 requests a month with hourly updated rates.
- From the browser
- Yes (CORS)
- Formats
- JSON
- Interface
- REST, HTTP-GET
- Provider
- docs.openexchangerates.org
More information: https://docs.openexchangerates.org/reference/api-introduction
Used in: Build a currency converter with free exchange rate APIs
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Example request
curl
curl 'https://openexchangerates.org/api/latest.json?app_id=YOUR_API_KEY'JavaScript
const response = await fetch("https://openexchangerates.org/api/latest.json?app_id=YOUR_API_KEY");
const data = await response.json();
console.log(data);Python
import requests
response = requests.get(
"https://openexchangerates.org/api/latest.json?app_id=YOUR_API_KEY",
timeout=30,
)
print(response.json())Replace YOUR_API_KEY with your own key. The JavaScript works in a web page as well as in Node.js 18 or newer.