Simple Future
The Future tense has only one set of endings for all three conjugations(-ar/-er/-ir).
(shall or will)
Regular verbs are conjugated including the infinitive.
Alternative Future Tense
The Future tense tends to sound a little bit formal, the most common way to express a verb in the future is with the verb: Ir (to go).
Voy a comer.
I am going to eat.