How do you conjugate ser in Spanish?

Ser is conjugated across all Spanish tenses including present, preterite, imperfect, future, conditional, subjunctive, and more. Each tense has specific conjugations for yo, tú, él/ella/usted, nosotros, vosotros, and ellos/ustedes. You can see complete conjugation tables with audio pronunciations on this page.

What are common idiomatic expressions with ser?

Common idiomatic expressions using ser include: "ser pan comido" (to be a piece of cake (lit: to be eaten bread)), "ser uña y carne" (to be inseparable (lit: to be nail and flesh)), "sea como sea" (one way or another, no matter what). These expressions are frequently used in everyday Spanish conversation.

What should I know about using ser?

Ser is one of two verbs meaning "to be" in Spanish (the other is estar)

What verbs are related to ser?

Verbs related to ser include: estar. These verbs share similar meanings, stems, or conjugation patterns.

How do you use ser in a sentence?

Example: "Soy profesora de español." which means "I am a Spanish teacher." in English.

What are synonyms for ser?

Spanish synonyms for ser include: estar. The exact synonym to use depends on the context and specific meaning intended.

Ser

to be

🎯

Infinitive (infinitivo)

Base form of the verb

ser

🏃

Gerund (gerundio)

Present participle (-ing form)

siendo

📋

Past Participle

Used in compound tenses

sido

Simple Tenses

⚡

Present Indicative (presente de indicativo)

Present actions and habitual activities

Person	Conjugation	English
yo	soy I be	I be
tú	eres you be	you be
él/ella/usted	es he/she/you bes	he/she/you bes
nosotros	somos we be	we be
vosotros	sois you all be	you all be
ellos/ustedes	son they/you all be	they/you all be

🕰️

Imperfect Indicative (imperfecto de indicativo)

Ongoing past actions and descriptions

Person	Conjugation	English
yo	era I used to be	I used to be
tú	eras you used to be	you used to be
él/ella/usted	era he/she/you used to be	he/she/you used to be
nosotros	éramos we used to be	we used to be
vosotros	erais you all used to be	you all used to be
ellos/ustedes	eran they/you all used to be	they/you all used to be

📅

Preterit (pretérito)

Completed past actions

Person	Conjugation	English
yo	fui I been	I been
tú	fuiste you been	you been
él/ella/usted	fue he/she/you been	he/she/you been
nosotros	fuimos we been	we been
vosotros	fuisteis you all been	you all been
ellos/ustedes	fueron they/you all been	they/you all been

🔮

Future (futuro)

Future actions and intentions

Person	Conjugation	English
yo	seré I will be	I will be
tú	serás you will be	you will be
él/ella/usted	será he/she/you will be	he/she/you will be
nosotros	seremos we will be	we will be
vosotros	seréis you all will be	you all will be
ellos/ustedes	serán they/you all will be	they/you all will be

🎯

Conditional (potencial simple)

Hypothetical and conditional actions

Person	Conjugation	English
yo	sería I would be	I would be
tú	serías you would be	you would be
él/ella/usted	sería he/she/you would be	he/she/you would be
nosotros	seríamos we would be	we would be
vosotros	seríais you all would be	you all would be
ellos/ustedes	serían they/you all would be	they/you all would be

💭

Present Subjunctive (presente de subjuntivo)

Subjective present actions and desires

Person	Conjugation	English
yo	sea that I be	that I be
tú	seas that you be	that you be
él/ella/usted	sea that he/she/you be	that he/she/you be
nosotros	seamos that we be	that we be
vosotros	seáis that you all be	that you all be
ellos/ustedes	sean that they/you all be	that they/you all be

🌙

Imperfect Subjunctive (imperfecto de subjuntivo)

Subjective past actions and hypothetical situations

Person	Conjugation	English
yo	fuera or fuera that I been	that I been
tú	fueras or fueras that you been	that you been
él/ella/usted	fuera or fuera that he/she/you been	that he/she/you been
nosotros	fuéramos or fuéramos that we been	that we been
vosotros	fuerais or fuerais that you all been	that you all been
ellos/ustedes	fueran or fueran that they/you all been	that they/you all been

Compound Tenses

✅

Present Perfect (perfecto de indicativo)

Actions completed recently or with present relevance

Person	Conjugation	English
yo	he sido I have been	I have been
tú	has sido you have been	you have been
él/ella/usted	ha sido he/she/you have been	he/she/you have been
nosotros	hemos sido we have been	we have been
vosotros	habéis sido you all have been	you all have been
ellos/ustedes	han sido they/you all have been	they/you all have been

⏪

Pluperfect Indicative (pluscuamperfecto de indicativo)

Actions completed before another past action

Person	Conjugation	English
yo	había sido I had been	I had been
tú	habías sido you had been	you had been
él/ella/usted	había sido he/she/you had been	he/she/you had been
nosotros	habíamos sido we had been	we had been
vosotros	habíais sido you all had been	you all had been
ellos/ustedes	habían sido they/you all had been	they/you all had been

📍

Preterit Perfect (pretérito anterior)

Actions completed immediately before another past action

Person	Conjugation	English
yo	hube sido I had been	I had been
tú	hubiste sido you had been	you had been
él/ella/usted	hubo sido he/she/you had been	he/she/you had been
nosotros	hubimos sido we had been	we had been
vosotros	hubisteis sido you all had been	you all had been
ellos/ustedes	hubieron sido they/you all had been	they/you all had been

🎊

Future Perfect (futuro perfecto)

Actions that will be completed by a future time

Person	Conjugation	English
yo	habré sido I will have been	I will have been
tú	habrás sido you will have been	you will have been
él/ella/usted	habrá sido he/she/you will have been	he/she/you will have been
nosotros	habremos sido we will have been	we will have been
vosotros	habréis sido you all will have been	you all will have been
ellos/ustedes	habrán sido they/you all will have been	they/you all will have been

🔄

Conditional Perfect (potencial compuesto)

Actions that would have been completed under certain conditions

Person	Conjugation	English
yo	habría sido I would have been	I would have been
tú	habrías sido you would have been	you would have been
él/ella/usted	habría sido he/she/you would have been	he/she/you would have been
nosotros	habríamos sido we would have been	we would have been
vosotros	habríais sido you all would have been	you all would have been
ellos/ustedes	habrían sido they/you all would have been	they/you all would have been

💫

Subjunctive Present Perfect (perfecto de subjuntivo)

Subjective actions completed in relation to the present

Person	Conjugation	English
yo	haya sido that I have been	that I have been
tú	hayas sido that you have been	that you have been
él/ella/usted	haya sido that he/she/you have been	that he/she/you have been
nosotros	hayamos sido that we have been	that we have been
vosotros	hayáis sido that you all have been	that you all have been
ellos/ustedes	hayan sido that they/you all have been	that they/you all have been

🌌

Subjunctive Past Perfect (pluscuamperfecto de subjuntivo)

Subjective actions completed before another past action

Person	Conjugation	English
yo	hubiera sido that I had been	that I had been
tú	hubieras sido that you had been	that you had been
él/ella/usted	hubiera sido that he/she/you had been	that he/she/you had been
nosotros	hubiéramos sido that we had been	that we had been
vosotros	hubierais sido that you all had been	that you all had been
ellos/ustedes	hubieran sido that they/you all had been	that they/you all had been

❗

Commands (imperativo)

Commands and direct orders

Person	Command	English
tú	sé	be! (you)
usted	sea	be! (you formal)
nosotros	seamos	let's be!
vosotros	sed	be! (you all)
ustedes	sean	be! (you all)

🚫

Negative Commands (imperativo negativo)

Negative commands and prohibitions

Person	Command	English
tú	no seas	don't be! (you)
usted	no sea	don't be! (you formal)
nosotros	no seamos	let's not be!
vosotros	no seáis	don't be! (you all)
ustedes	no sean	don't be! (you all)

More About "ser"

Idiomatic Expressions

ser pan comido

to be a piece of cake (lit: to be eaten bread)

💡 Something very easy to do

ser uña y carne

to be inseparable (lit: to be nail and flesh)

💡 Describing two people who are very close

sea como sea

one way or another, no matter what

💡 Expressing determination regardless of circumstances

lo que será, será

what will be, will be

💡 Accepting fate or future outcomes

ser un cero a la izquierda

to be a nobody (lit: to be a zero on the left)

💡 Someone unimportant or insignificant

Examples in Context

Soy profesora de español.

I am a Spanish teacher.

Present

La reunión es a las tres.

The meeting is at three.

Present

Fue un día increíble.

It was an incredible day.

Preterite

Cuando era niño, era muy tímido.

When I was a child, I was very shy.

Imperfect

Related Verbs

estar(to be (temporary states/location))

complementary verb for "to be"

Synonyms & Antonyms

Synonyms:

estar(to be)

Used for temporary states, locations, and conditions (see usage notes)

Usage Notes

•Ser is one of two verbs meaning "to be" in Spanish (the other is estar)
•Use SER for: permanent characteristics, professions, nationality, origin, material, possession, time/date, events/locations
•SER is used for essential qualities that define what something IS
•Highly irregular in all tenses - one of the most irregular Spanish verbs
•The preterite forms (fui, fue, etc.) are shared with the verb "ir" (to go)
•Common in passive voice constructions: "fue construido" (was built)
•Use with adjectives describing personality, physical traits, and inherent qualities

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Ser

Simple Tenses

Compound Tenses

More About "ser"

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