To do this task
Go to the Lists menu and click Currency List.
Double-click the currency you want to enter an exchange rate for.
To enter a new rate, select a blank row in the Exchange Rates section and then enter a date and rate.
To change an existing rate, select the exchange rate you want to change and enter the new rate.
To insert a date between two entries, use the calendar to select the date. QuickBooks inserts the date for you, and then you can enter the rate.
To delete entire lines, select the entry and then go to the Edit menu and select Delete Line.
You can change
The exchange rates for any active currency
format for an active currency
The currency name or code for currencies you manually added
You can't change
The currency name or code for currencies included with QuickBooks.
The exchange rate of your home currency.
The addition of currency symbols. QuickBooks uses standard currency codes and doesn't use currency symbols.
What to know about exchange rates
Use the currency list