If you’re on the gold plan, you get a feature called “Zone Pricing”. What this essentially does, is it recognizes your customers location and automatically converts currency and pricing to preset values and displays this to your customer accordingly. You can manually edit and add pricing zone’s and currency rates by going to WooCommerce > Settings > Zone Pricing > Pricing zones.
Please note that when you change your the base currency in WooCommerce > Settings > General, you will have to change the settings in Zone Pricing too. Also, it might be wise to update the currency rates every once in a while, since these are subject to changes in exchange rates and need to be edited manually.