"Where are you going?" is the English phrase that can be used to ask someone where they are headed or where they plan to go. It is a common question asked by people who are meeting up with friends, family members, or colleagues. The answer could be a specific location, such as a city, town, or country, or it could be more general, such as "I'm just going out for the day."
If you want to ask someone in a more casual setting, you could use the phrase "where're you at?" which is a shortened version of "where are you?" and "where are you going?". This phrase is often used in text messages or social media conversations between friends.
It's important to note that asking someone where they are going can also be seen as intrusive or nosy if you don't have a close relationship with them. So it's always best to ask politely and respect their privacy if they don't feel comfortable sharing their plans.