Selling in multiple currencies
To sell in multiple currencies, you need to have Shopify Payments enabled in your online store. When you enable multiple currencies, your customers can view prices in your store, pay for their orders at checkout, and receive refunds in their local currency. Your prices are converted based on the foreign exchange rate, which is set automatically by default based on market rates, but you can choose to set the foreign exchange rate manually.
Customers can select their local currency from a currency selector that you can add to your theme if one isn't included with your theme already. You can also use Shopify's Geolocation app to prompt customers to switch to their local currency.
For more information, refer to Sell in multiple currencies with Shopify Payments.