# \CurrencyExchangeRatesApi
All URIs are relative to *https://demo.firefly-iii.org*
[**get_exchange_rate**](CurrencyExchangeRatesApi.md#get_exchange_rate) | **GET** /api/v1/cer | Get an exchange rate.
## get_exchange_rate
> crate::models::ExchangeRate get_exchange_rate(from, to, date, amount)
Get an exchange rate.
Get an exchange rate. If Firefly III doesn't know the rate it will set the rate to 1.0.
### Parameters
**from** | Option<**String**> | The source currency code. If omitted, defaults to EUR. | |
**to** | Option<**String**> | The destination currency code. If omitted, defaults to USD. | |
**date** | Option<**String**> | The date you want to know the exchange rate on. | |
**amount** | Option<**f64**> | The amount in the source currency. If added, Firefly III will calculate the amount in the destination currency. | |
### Return type
[**crate::models::ExchangeRate**](ExchangeRate.md)
### Authorization
[firefly_iii_auth](../README.md#firefly_iii_auth)
### HTTP request headers
- **Content-Type**: Not defined
- **Accept**: application/json
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