Ser vs estar
Ser and estar both mean “to be”. Ser tells you what something is: its identity and defining features. Estar tells you how or where it is right now: its location, state or condition. “Permanent vs temporary” is a decent first guess, but “definition vs condition” is the rule that actually works.
The quick answer
| Use ser for (DOCTOR) | Use estar for (PLACE) |
|---|---|
| Descriptions: Es alta. | Position: Está sentada. |
| Occupations: Soy profesor. | Location: Estamos en Lima. |
| Characteristics: Eres paciente. | Actions in progress: Está comiendo. |
| Time and dates: Es lunes. Son las dos. | Conditions: Está enfermo. |
| Origin and material: Es de Chile. Es de oro. | Emotions: Estoy feliz. |
| Relationships: Es mi primo. |
Practise: ser or estar?
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Mi hermana ____ médica.
Adjectives that change meaning
| Adjective | with ser | with estar |
|---|---|---|
| listo | clever | ready |
| aburrido | boring | bored |
| malo | bad | ill, or tastes bad |
| rico | rich | delicious |
| verde | green | unripe, inexperienced |
| vivo | lively, sharp | alive |
| orgulloso | arrogant | proud (of something) |
| seguro | safe | sure, certain |
The exceptions that break “permanent vs temporary”
- Death uses estar: Está muerto. It is the state that results from dying.
- Location uses estar even when permanent: Roma está en Italia.
- Events use ser for location: El concierto es en el estadio.
- Time uses ser even though it changes every minute: Es la una.
- Passive voice uses ser; resulting state uses estar: La puerta fue cerrada (someone closed it) vs La puerta está cerrada (it is shut).
Present tense side by side
| ser | estar | |
|---|---|---|
| yo | soy | estoy |
| tú | eres | estás |
| él/ella/usted | es | está |
| nosotros | somos | estamos |
| vosotros | sois | estáis |
| ellos/ustedes | son | están |
Full tables for every tense: ser conjugation · estar conjugation. In the preterite, ser shares its forms with ir (fui, fuiste, fue…).
Frequently asked questions
What is the difference between ser and estar?
Both mean “to be”. Ser defines what something is: identity, profession, origin, material, time, events and inherent characteristics. Estar describes how or where something is: location, temporary states, conditions, emotions and the result of a change, plus the progressive (estar + gerund).
Is ser permanent and estar temporary?
As a first rule of thumb, yes, but it breaks often. Death and location use estar even though they can be permanent (Está muerto, Madrid está en España), while time and age-related descriptions can use ser even though they change (Son las tres, Es joven). Think “definition vs condition” instead.
Do you use ser or estar for location?
Estar for where a person or thing is (El libro está en la mesa). Ser for where an event takes place (La fiesta es en mi casa).
Which adjectives change meaning with ser and estar?
Common ones: ser listo (clever) / estar listo (ready); ser aburrido (boring) / estar aburrido (bored); ser malo (bad) / estar malo (ill); ser rico (rich) / estar rico (tasty); ser verde (green) / estar verde (unripe); ser vivo (lively, sharp) / estar vivo (alive).
Ser or estar for feelings and moods?
Estar: Estoy cansado, Está contenta, Estamos nerviosos. Use ser only for personality traits: Es una persona nerviosa (a nervous person by nature).