The future tense is used to describe future actions or an intention to do something in the future.
Iré al cine esta noche.
I will go to the movies tonight.
The conditional is used to describe hypothetical or uncertain events that are contingent to another set of circumstances.
Iría al cine esta noche si tuviera dinero.
I would go to the movies tonight if I had money.
Both tenses express potential events. The difference comes in the certainty or uncertainty that the action may or may not happen.
Yo iré al cine esta noche.
I will go to the movies tonight. (The action is likely to happen.)
Yo iría al cine esta noche si tuviera dinero.
I would go to the movies tonight if I had money. (The action is unlikely/uncertain to happen.)
Iré al cine esta noche.
I will go to the movies tonight.
The conditional is used to describe hypothetical or uncertain events that are contingent to another set of circumstances.
Iría al cine esta noche si tuviera dinero.
I would go to the movies tonight if I had money.
Both tenses express potential events. The difference comes in the certainty or uncertainty that the action may or may not happen.
Yo iré al cine esta noche.
I will go to the movies tonight. (The action is likely to happen.)
Yo iría al cine esta noche si tuviera dinero.
I would go to the movies tonight if I had money. (The action is unlikely/uncertain to happen.)