L need to change my account from CAD to USD

Do you need to convert data from QBO CA version to QBO US version?

Hi noorabomahir079-,

Welcome to the Community! I'll be happy to help. For this, you'll have to turn on the multi-currency feature so you're able to select the currency (USD) for your account. Please note that once you turn on the said feature, you're unable to turn it off or change your home currency.

Here's how to turn on multi-currency feature: 

1. Select Account and Settings, and then go to the Advanced tab.
2. Click the Pencil icon in the Currency section.
3. Choose your Home Currency. Please note that your home currency will be set and cannot be changed.
4. Select the Multicurrency checkbox and confirm that you understand that you can't undo this option.
5. Click Save and close.

Let me share this article for additional information. It provides an overview on how to add or delete currencies, enter the exchange rate, add foreign customers or suppliers to name a few: Set up and use multicurrency in QuickBooks Online.

Let me know if you need additional information by commenting below. I'll be around if there's anything else I can do.