The Open Exchange Rates integration will show you the current exchange rate from Open Exchange Rates that provides real-time exchange rates for 170 currencies. The free account is limited to only USD as a base currency, allows 1000 requests per month, and updates every hour.
Obtain your API key here
To add the Open Exchange Rates integration to your Home Assistant instance, use this My button:
If the above My button doesn’t work, you can also perform the following steps manually: