Skip to main content

Learn Spanish with Babbel

Choose a language to get started
Intermediate B1

Spanish Ser Conjugation: A Complete Guide

Master the essential Spanish verb “ser” with our comprehensive conjugation guide.

By Luca Harsh

Key Takeaways

  • The guide thoroughly maps out ser (“to be”) across the most important tenses and moods: present, preterite, imperfect, future, conditional, and present subjunctive, with clear example sentences for each.

  • It also covers how ser is used in contrast to estar: ser expresses permanent or inherent characteristics and identities, contrasted with estar for temporary states or locations.

  • Practical learning tips emphasize daily practice, flashcards, contextual sentences, and online tools to internalize forms and avoid rote-only memorization.

  • Special notes include plural “you” options (vosotros/vosotras sois vs. ustedes son) and highlight common learner confusions (e.g., third-person es; distinguishing preterite vs. imperfect).

Learning Spanish verb conjugations is a fundamental step in mastering the language, and the verb ser ("to be") is perhaps the most important verb to understand. As one of the two Spanish verbs that translate to "to be" (the other being estar), ser is used constantly in everyday speech to describe permanent or inherent characteristics. This comprehensive guide will walk you through all the conjugations of ser across different tenses and moods, with clear examples to help cement your understanding.

How to Learn Spanish Fast with the Babbel App

Babbel helps you learn Spanish by practicing vocabulary, grammar, and everyday conversations.

🎓 Interactive Spanish Lessons

🔊 AI Conversation Practice

📖 Grammar Guide

🏆 Most Innovative Language App

Present Tense Conjugation Of Ser

The present tense (presente de indicativo) is likely where you'll begin your journey with ser. This tense is used to talk about current states, identities, or characteristics that are considered permanent or inherent.

Person

Conjugation

Example

yo

soy

Yo soy estudiante.

("I am a student.")

eres

Tú eres inteligente.

("You are intelligent.")

él/ella/usted

es

Ella es doctora.

("She is a doctor.")

nosotros/nosotras

somos

Nosotros somos amigos.

("We are friends.")

vosotros/vosotras

sois

Vosotros sois españoles.

("You all are Spanish.")

ellos/ellas/ustedes

son

Ellos son altos.

("They are tall.")

"Eres" is the singular conjugation, specifically for the informal "you" () form. The plural equivalent is sois for vosotros/vosotras (informal "you all" used primarily in Spain) or son for ustedes (formal "you all" used throughout the Spanish-speaking world).

For third-person singular (él, ella, usted), the correct form is es. This form applies to he (él), she (ella) and the formal "you" (usted).

Past Tense Conjugations Of Ser

Spanish has several past tenses, but we'll focus on the two most commonly used with ser:

Preterite (Pretérito Indefinido)

The preterite is used for completed actions in the past.

Person

Conjugation

Example

yo

fui

Yo fui a la fiesta. ("I was at the party.")

fuiste

Tú fuiste amable. ("You were kind.")

él/ella/usted

fue

Ella fue mi maestra. ("She was my teacher.")

nosotros/nosotras

fuimos

Nosotros fuimos a París. ("We were in Paris.")

vosotros/vosotras

fuisteis

Vosotros fuisteis los ganadores. ("You all were the winners.")

ellos/ellas/ustedes

fueron

Ellos fueron médicos. ("They were doctors.")

Imperfect (Pretérito Imperfecto)

The imperfect is used for ongoing or habitual actions in the past.

Person

Conjugation

Example

yo

era

Yo era tímido de niño. ("I was shy as a child.")

eras

Tú eras más alto antes. ("You were taller before.")

él/ella/usted

era

Él era profesor. ("He was a teacher.")

nosotros/nosotras

éramos

Nosotros éramos vecinos. ("We were neighbors.")

vosotros/vosotras

erais

Vosotros erais muy divertidos. ("You all were very fun.")

ellos/ellas/ustedes

eran

Ellas eran estudiantes. ("They were students.")

Future Tense Conjugation Of Ser

The future tense (futuro simple) is used to discuss what will be in the future.

Person

Conjugation

Example

yo

seré

Yo seré doctor algún día. ("I will be a doctor someday.")

serás

Tú serás un gran artista. ("You will be a great artist.")

él/ella/usted

será

Ella será la directora. ("She will be the director.")

nosotros/nosotras

seremos

Nosotros seremos padres pronto. ("We will be parents soon.")

vosotros/vosotras

seréis

Vosotros seréis los responsables. ("You all will be responsible.")

ellos/ellas/ustedes

serán

Ellos serán nuestros guías. ("They will be our guides.")

Get our free Spanish Pocket Guide

All the essentials, all in one place. Check it out today!

Conditional Tense Conjugation Of Ser

The conditional tense expresses what would be under certain circumstances.

Person

Conjugation

Example

yo

sería

Yo sería feliz con eso. ("I would be happy with that.")

serías

Tú serías un buen líder. ("You would be a good leader.")

él/ella/usted

sería

Él sería perfecto para el puesto. ("He would be perfect for the position.")

nosotros/nosotras

seríamos

Nosotros seríamos buenos socios. ("We would be good partners.")

vosotros/vosotras

seríais

Vosotros seríais excelentes profesores. ("You all would be excellent teachers.")

ellos/ellas/ustedes

serían

Ellos serían mis invitados. ("They would be my guests.")

Subjunctive Conjugations Of Ser

The subjunctive mood is used to express desires, doubts, possibilities or subjective opinions.

Present Subjunctive (Presente de Subjuntivo)

Person

Conjugation

Example

yo

sea

Espero que yo sea seleccionado. ("I hope that I am selected.")

seas

Quiero que tú seas honesto. ("I want you to be honest.")

él/ella/usted

sea

Es importante que ella sea puntual. ("It's important that she is punctual.")

nosotros/nosotras

seamos

Ojalá seamos ganadores. ("Hopefully we are winners.")

vosotros/vosotras

seáis

Prefiero que vosotros seáis cuidadosos. ("I prefer that you all are careful.")

ellos/ellas/ustedes

sean

Dudo que ellos sean culpables. ("I doubt that they are guilty.")

Tips For Mastering Ser Conjugation

  1. Practice daily: Incorporate "ser" into your daily Spanish practice, trying to form sentences with different persons and tenses.

  2. Use flashcards: Create flashcards with the different conjugations to help memorize them.

  3. Distinguish between ser and estar: Remember that ser is used for permanent qualities, while estar is for temporary states or locations.

  4. Learn through context: Rather than memorizing tables, try to learn conjugations through meaningful phrases and contexts.

  5. Use online resources: There are many apps and websites dedicated to Spanish verb conjugation practice.

Understanding the conjugation of ser is a significant step in your Spanish language journey. This versatile verb is essential for describing identities, characteristics and permanent qualities. With regular practice and application in real contexts, you'll soon find yourself using these conjugations naturally and confidently in your Spanish conversations.

Get started learning a new language today.

Luca Harsh

Luca Harsh is an edtech copywriter and language enthusiast. They studied French and International Studies at the University of Michigan and have dabbled in Spanish, Italian and German. They live in Chicago with their tabby cat and their dying houseplants.

Explore More

Understanding Reflexive Pronouns In Spanish

Pronouns all about you! Learn how to use Spanish reflexive pronouns with this simple guide.

Read more

Spanish Grammar: When To Use Ser And Estar

Featuring the obligatory "to be or not to be" reference.

Read more

Spanish Grammar: When To Use Tú And Usted

Time to dive into a topic that combines grammar and etiquette.

Read more