The default currency for Shopify is American Dollars, but that doesn’t mean that your shop has to operate in US Dollars.
Follow the few simple steps mentioned below to change your site currency.
Step 1: Click on the Apps link in the left navigation bar in your Shopify store, and then click on the MailMunch - Email Popup app to login to your MailMunch account.
Step 2: Once logged in, click on the Site Settings link present on the bottom left of your screen.
Step 3: Click on the Shopify tab, and scroll down to the Site Currency section.
Step 4: Click on the drop-down menu, and select your preferred currency. Click on the UPDATE button to save the changes made.
That's it! You have successfully changed your site currency.