-ar verb irregular · spelling-change -gar B1 · Intermediate

Conjugate investigar in Spanish

to investigate / to research

investigar is an irregular -ar verb ranked #359 among the most common Spanish verbs. For example: "Yo investigo todos los días." (I investigate every day.). Use the tables below for full conjugation across all 7 tenses.

Ready to practise investigar? Use the Conjugado app to drill conjugations with spaced repetition and actually remember them.
Practice for free ↗
⚡ Irregular verb — investigar (spelling-change -gar) does not follow standard -ar patterns. Pay close attention to the stems in each tense.

Describes current actions, habits, and general truths. The most frequently used tense — master it first.

Pronoun Conjugation
yo investigo
investigas
él/ella/Ud. investiga
nosotros investigamos
vosotros investigáis
ellos/ellas/Uds. investigan
Example

Yo investigo todos los días.

I investigate every day.

Describes completed past actions with a clear start and end. Key signals: ayer, el lunes pasado, de repente.

Pronoun Conjugation
yo investigué *
investigaste
él/ella/Ud. investigó
nosotros investigamos
vosotros investigasteis
ellos/ellas/Uds. investigaron
Example

Nosotros investigamos juntos.

We investigate together.

Describes habitual past actions, background context, and ongoing states. Key signals: siempre, normalmente, cuando era niño.

Pronoun Conjugation
yo investigaba
investigabas
él/ella/Ud. investigaba
nosotros investigábamos
vosotros investigabais
ellos/ellas/Uds. investigaban
Example

Antes yo investigaba con frecuencia.

Before, I used to investigate / to research often.

Describes future events and predictions. In everyday speech, ir a + infinitive is often preferred for planned events.

Pronoun Conjugation
yo investigaré
investigarás
él/ella/Ud. investigará
nosotros investigaremos
vosotros investigaréis
ellos/ellas/Uds. investigarán
Example

Mañana yo investigaré.

Tomorrow I will investigate / to research.

Expresses what would happen under certain conditions — equivalent to "would" in English. Also used for polite requests.

Pronoun Conjugation
yo investigaría
investigarías
él/ella/Ud. investigaría
nosotros investigaríamos
vosotros investigaríais
ellos/ellas/Uds. investigarían
Example

Si pudiera, yo investigaría.

If I could, I would investigate / to research.

Used in clauses expressing wishes, doubt, emotion, or uncertainty — typically after que. Triggers: querer, esperar, dudar, ojalá.

Pronoun Conjugation
yo investigue *
investigues *
él/ella/Ud. investigue *
nosotros investiguemos *
vosotros investiguéis *
ellos/ellas/Uds. investiguen *
Example

Quiero que tú investigues más.

I want you to investigate more.

Used to give commands and direct requests. Affirmative and negative forms differ significantly in Spanish.

Pronoun Conjugation
yo -
investiga
él/ella/Ud. investige
nosotros investigemos
vosotros investigad
ellos/ellas/Uds. investigen
Example

Él investiga con frecuencia.

He investigates often.

Test yourself

Type the correct conjugation for each prompt.

1/6

Example sentences

Common phrases with investigar

What to learn next