Ser vs Estar: Rules, Examples and a Quick Quiz

How this guide was made. The rules follow the Real Academia Española and Instituto Cervantes reference materials listed at the end. The example sentences are standard in Latin America and Spain unless a note says otherwise. It explains the grammar and does not claim classroom testing.

Use ser to say what someone or something is (identity, origin, profession, time, possession and typical qualities), and use estar to say where something is and how it is right now (location, condition, emotions and actions in progress). The shortcut “ser is permanent, estar is temporary” is only a rough guide and fails often enough that it is worth learning the real pattern: ser classifies, and estar describes a state or a place.

The short version

You want to say…UseExample
Who or what someone isserMarta es ingeniera. (Marta is an engineer.)
Where someone is fromserSomos de Chile. (We are from Chile.)
The time or the dateserSon las tres. Hoy es lunes. (It is three o’clock. Today is Monday.)
What something is made of, or who owns itserLa mesa es de madera. El libro es de Ana.
A typical or defining qualityserEl hielo es frío. (Ice is cold.)
Where an event takes placeserLa boda es en la iglesia. (The wedding is in the church.)
Where a person or thing isestarEstoy en casa. El museo está en el centro.
A condition or stateestarEl café está frío. (The coffee is cold.)
A feeling or moodestarEstamos contentos. (We are happy.)
An action in progressestar + gerundEstoy estudiando. (I am studying.)

Compare El hielo es frío with El café está frío. Ice is cold by nature, while the coffee is cold at the moment. That difference between what something is and how it is now is the heart of the choice.

When to use ser

  1. Identity, occupation and relationships. Ella es mi hermana. Ese señor es el director. Mis padres son médicos. After ser, an unmodified occupation takes no article (Soy profesora), but one with a description does (Soy una profesora muy exigente).
  2. Origin and nationality. Soy de Perú. Ella es colombiana.
  3. Time, days, dates and the time of an event. Son las ocho y media. Es la una y media. Hoy es el cinco de mayo. Mañana es domingo. La reunión es a las cuatro. Use es for 1:00 to 1:59 and son for every other hour (Son las dos).
  4. Possession and material. Esa casa es de mi padre. La camisa es de algodón.
  5. Typical characteristics. Mi perro es grande. La nieve es blanca. Ana es simpática.
  6. Where an event takes place. El concierto es en el teatro. La reunión es en la sala tres. This is the main location exception to remember: events use ser, not estar.
  7. Impersonal expressions and opinions. Es importante dormir bien. Es necesario llegar temprano. Es una lástima.
  8. The passive voice. La ley fue aprobada por el Congreso. (The law was approved by Congress.)
  9. The total to pay. ¿Cuánto es? Son diez euros. (How much is it? It is ten euros.) Prices that change from day to day use estar a (see below).

When to use estar

  1. Location of people and things. Estoy en la biblioteca. Las llaves están en la mesa. Lima está en Perú. Even a permanent geographic location takes estar.
  2. Conditions and states. La puerta está cerrada. El agua está fría. Mi abuela está enferma.
  3. Emotions and moods. Estamos muy contentos. ¿Estás nerviosa?
  4. Actions in progress. Estoy cocinando. Ellos están viendo una película.
  5. The result of an action. La cena está lista. Los platos están sucios. La ventana está rota.
  6. How something looks, tastes or feels right now. ¡Qué elegante estás! La sopa está deliciosa.
  7. The date and changing prices, with “estar a”. Estamos a cinco de mayo. Los tomates están a un euro el kilo. The first is an alternative to Hoy es cinco de mayo.

Why “permanent versus temporary” is misleading

The rule breaks in both directions:

A better rule: ser names what something is, meaning its category, origin or defining qualities. Estar says where it is, or what state it is in at a given moment or as the result of something. The same adjective can therefore express two different judgments:

Adjectives that change meaning

Some adjectives mean different things with ser and estar, so the verb choice matters:

AdjectiveWith serWith estar
aburridoboring (Es aburrido.)bored (Está aburrido.)
listoclever, mainly in Spain (Es listo.)ready (Está listo.)
malobad (Es malo.)sick in some countries, or gone off if it is food (Está malo.)
buenogood (El pan es bueno.)tasty (El pan está bueno.)
verdegreen (Es verde.)unripe (Está verde.)
vivosharp, quick (Es vivo.)alive (Está vivo.)
segurosafe or certain (Es seguro.)sure (Estoy seguro.)
cansadotiring (El viaje es cansado.)tired (Estoy cansado.)
calladoquiet by nature (Es callado.)silent right now (Está callado.)
abiertoopen-minded or frank (Es abierto.)open, not closed (Está abierto.)
orgullosoarrogant (Es orgulloso.)proud of something (Está orgulloso.)
nuevonew (Es nuevo.)like new (Está nuevo.)

Common mistakes

MistakeCorrectWhy
Soy en casa.Estoy en casa.Location takes estar.
Estoy médico.Soy médico.Occupation normally takes ser. A temporary job can use estar de, as in Estoy de niñera este verano.
Soy cansado.Estoy cansado.Ser cansado describes something that tires you (El viaje es cansado). For how you feel, use estar.
La fiesta está en mi casa.La fiesta es en mi casa.Events take ser.
Soy comiendo.Estoy comiendo.The progressive uses estar.
Soy 25 años.Tengo 25 años.Age uses tener.
Estoy hambre. Estoy sed.Tengo hambre. Tengo sed.Hunger, thirst, cold, heat and sleepiness use tener.

Estoy frío and Estoy caliente are real sentences, but they do not mean “I feel cold” or “I feel hot”, and Estoy caliente can be misread as something else. Say Tengo frío and Tengo calor.

A quick decision path

  1. Is it happening right now, as in “I am eating”? Use estar plus the gerund.
  2. Is it the location of a person or thing? Use estar. If it is where an event happens, use ser.
  3. Is it time, a date, origin, material, possession or the total to pay? Use ser.
  4. Are you defining or classifying, or naming a typical quality? Use ser.
  5. Are you describing a state, a mood or how something is right now? Use estar.

How ser and estar are taught by level

The Instituto Cervantes curriculum plan spreads the two verbs across levels instead of teaching everything at once:

That is why a beginner can start with the short version above and return to the events and meaning-change sections later.

Ser and estar conjugated

Both verbs are irregular. Here are the forms you need first:

ser (present)estar (present)ser (preterite)estar (preterite)ser (imperfect)estar (imperfect)
yosoyestoyfuiestuveeraestaba
túeresestásfuisteestuvisteerasestabas
él, ella, ustedesestáfueestuvoeraestaba
nosotrossomosestamosfuimosestuvimoséramosestábamos
vosotrossoisestáisfuisteisestuvisteiseraisestabais
ellos, ellas, ustedessonestánfueronestuvieroneranestaban

The preterite of ser is identical to the preterite of ir (fui, fuiste, fue). The vosotros forms are used mainly in Spain. In regions that use vos, such as Argentina and Uruguay, you will hear vos sos instead of tú eres, while vos estás is the same as tú estás. See the full charts for ser and estar, which show every tense.

Quick quiz

Choose ser or estar in the right form for each sentence:

  1. Mi hermana ___ en Madrid este mes.
  2. La reunión ___ a las cuatro.
  3. ¿De dónde ___ tú?
  4. La sopa ___ fría porque llegaste tarde.
  5. Mis padres ___ médicos.
  6. Ella ___ muy nerviosa hoy.
  7. El museo ___ cerca de la estación.
  8. Ese chico ___ muy aburrido; siempre habla de lo mismo.
  9. Los alumnos ___ aburridos después de tres horas de clase.
  10. La camisa ___ de algodón.
Show the answers
  1. está (location).
  2. es (the time of an event).
  3. eres (origin).
  4. está (a temporary condition).
  5. son (occupation).
  6. está (a mood today).
  7. está (location).
  8. es (boring by nature).
  9. están (bored right now).
  10. es (material).

Frequently Asked Questions

What is the difference between ser and estar?

Ser identifies and classifies: who or what something is, where it is from, what it is made of and what it is like in general. Estar describes location, conditions, feelings and actions in progress. Both mean “to be”.

Is ser permanent and estar temporary?

Only roughly. Estar is used for lasting states such as being dead or married, and for permanent locations such as Lima being in Peru. Ser is used for temporary facts such as the day, a meeting time or being a student. Think “classifies” and “describes a state”.

Do you use ser or estar for location?

Use estar for where a person or thing is, as in Estoy en casa and El museo está en el centro. Use ser for where an event takes place, as in La fiesta es en mi casa.

Do you use ser or estar for emotions and feelings?

Use estar for emotions and moods, as in Estoy contento and Está nerviosa. Ser with an emotion adjective usually describes personality, for example Es nervioso means he is a nervous person.

How do you say you are hungry or cold in Spanish?

Use tener, not ser or estar, for physical sensations: Tengo hambre, Tengo frío, Tengo calor, Tengo sed and Tengo sueño. Age also uses tener: Tengo veinticinco años.

Do you use ser or estar for the weather?

Neither in most cases. Use hacer for many conditions (Hace frío, Hace sol) and estar for states such as Está nublado and the progressive Está lloviendo.

Which adjectives change meaning with ser and estar?

Common ones are aburrido (boring or bored), listo (clever or ready), malo (bad or sick), bueno (good or tasty), verde (green or unripe), vivo (sharp or alive), seguro (safe or sure) and cansado (tiresome or tired).

How do you conjugate ser and estar?

Both are irregular. In the present, ser is soy, eres, es, somos, sois, son, and estar is estoy, estás, está, estamos, estáis, están. The yo forms of the preterite are fui and estuve. See the charts for every tense.

Sources and how this was researched

This guide explains grammar from published reference works and does not claim classroom testing. Main sources: