| Form | habría / habrías / habríamos / habrían + past participle | Yo habría hecho lo mismo. | I would have done the same. |
| Unreal condition | si hubiera + participle, habría + participle | Si hubiera podido, habría ido. | If I had been able to, I would have gone. |
| Wish or advice | without the condition, says what one would have done | Yo habría llamado al médico. | I would have called the doctor. |
| Conjecture | supposes an event earlier than another past event | La luz estaba apagada: habrían salido. | The light was off: they must have gone out. |
| Reported speech | the future perfect of direct speech, reported from the past | Dijo que para el viernes habría terminado. | He said that he would have finished by Friday. |
| Reproach | habrías podido or deberías with a compound infinitive | Habrías podido avisarme. | You could have warned me. |
| C1Objection, contrast | grants what is supposed and contradicts it, or contrasts two people | Habría estudiado mucho, pero no se notó. / A ti te habría dado igual, pero a mí no. | He may have studied a lot, but it didn't show. / It might have made no difference to you, but it did to me. |
| C2Fear, warning | warns of what could have happened | ¡Qué susto! Te habrías roto una pierna. | What a fright! You could have broken a leg. |
| C2Press | presents an earlier event as unconfirmed | El incendio se habría iniciado de madrugada. | The fire is said to have started in the early hours. |
| C2Sequence | habrá terminado → habría terminado / ha terminado → había terminado | Dice que ha terminado. / Dijo que había terminado. | He says he has finished. / He said he had finished. |
| Trap | si takes hubiera, not habría | Si hubiera sabido, habría venido. | If I had known, I would have come. |
| Trap | the pronoun goes before habría | Yo lo habría comprado. | I would have bought it. |