¿Cómo estás? (How are you?)
What is Cómo está?
¿Cómo está? — How are you? — KOH-moh es-TAHSS, KOH-moh es-TAH —The first form (which is informal) normally would be used with someone you know on a first-name basis or when speaking with a child.
How do you respond to Como esta?
When someone asks you ¿Cómo estás? If you feel alright, you say estoy bien; you could also say, estoy muy bien, to give more emphasis, which means “very good” or “very well.” You can also add one extra word, gracias, meaning “thanks”, and estoy bien, gracias; it means “I'm fine, thank you.”