Using El Futuro Simple (simple future) to express probabilities or predictions in the future

El Futuro Simple, also known as El Futuro Imperfecto, is used when we want to express the probability of something happening in the future:

Look at these examples:

Estoy muy ocupada así que llegaré sobre las doce o doce y media.
I am very busy so I might arrive at about twelve or twelve thirty.

Hay un incidente ahí; tendrán que llamar a la policía.
There is an incident there; they might have to call the police.

Un árbol se ha caído; los vecinos llamarán al ayuntamiento.
A tree has fallen down; the neighbours might call the council.

El Futuro Simpleis also used to predict something that will happen in the future.

Have a look at this sentence:

La pitonisa me dijo: "Conocerás a alguien que cambiará tu vida."
The fortune teller told me: "You will meet someone who will change your life."

In both uses, probability and prediction, often the first part of the sentence establishes the premise that the probability or prediction, expressed using El Futuro Simple, is based on in the second part of the sentence. For example:

Es un hombre muy ambicioso; será muy rico sin duda.
He's a very ambitious man; he will become very rich, no doubt.

The first part of the sentence, he is an ambitious man, leads us to predict the second part of the sentence using El Futuro Simple he will become very rich.

See also Using El Futuro Simple (simple future) to express probabilities or predictions in the present

ATTENTION:
If the conjecture or expression of probability is about the past, then you'll use El Condicional Simple: see Using El Condicional Simple to wonder about the past for probability in the present.

Learn more about these related Spanish grammar topics

Examples and resources

La pitonisa me dijo: "Conocerás a alguien que cambiará tu vida."
The fortune teller told me: "You will meet someone who will change your life."


Hay un incidente ahí; tendrán que llamar a la policía.
There is an incident there; they might have to call the police.


Estoy muy ocupada así que llegaré sobre las doce o doce y media.
I am very busy so I might arrive at about twelve or twelve thirty.


Habéis sido muy estudiosos; aprobaréis todos.
You have all been very studious; you will all pass.


Un árbol se ha caído; los vecinos llamarán al ayuntamiento.
A tree has fallen down; the neighbours might call the council.


Es un hombre muy ambicioso; será muy rico sin duda.
He's a very ambitious man; he will become very rich, no doubt.


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