Ser vs. Estar: Choosing the Right "To Be"

English uses one verb, "to be", for everything. Spanish splits it into two: ser and estar. Choosing the right one is one of the most important skills in early Spanish, because the wrong choice can change the meaning of a sentence.

Use SER for what something is

Use ser for identity, origin, nationality, profession, relationship, time, material, and characteristics that are considered part of who someone or something is. A helpful memory aid is DOCTOR: Description, Origin, Characteristic, Time, Occupation, Relationship.

• Soy de Colombia. — I am from Colombia.
• Mi madre es médica. — My mother is a doctor.
• La reunión es a las cinco. — The meeting is at five.
• Mi casa es blanca. — My house is white.

Use ESTAR for where something is and how it is right now

Use estar for location, temporary states, feelings, and results of an action. The memory aid PLACE helps: Position, Location, Action (in progress), Condition, Emotion.

• Estoy en casa. — I am at home.
• El café está caliente. — The coffee is hot.
• Mis amigos están cansados. — My friends are tired.
• La puerta está abierta. — The door is open.

Same adjective, different meaning

Some adjectives change meaning with the verb. "Es aburrido" means "He is boring" (his personality). "Está aburrido" means "He is bored" (his current mood). Likewise, "Es listo" means he is clever, while "Está listo" means he is ready. Ask yourself: is this permanent, or is it a current state?