If you want to reach international markets with your Shopify store, having multiple currencies is a good start.
Shopify allows customers to checkout in their native currency (if available). Merchants must configure the available currencies in their Shopify admin.
The next aspect is making sure that your store and in particular, your theme, relays this information over to the customer. Some themes have this built in but it may not work as expected if you have extended your store with Apps.
Another solution is to use a Currency app. Below, we have outlined a selection of the best Shopify apps to enable multiple-currency store front visibility.