How to Say "they'll be" in Spanish
The Spanish word for “they'll be” is “estarán” — A2 level. This is a very common word in everyday Spanish.
Examples
Para Navidad, todos los invitados estarán en la sala principal.
For Christmas, all the guests will be in the main living room.
Si trabajamos toda la noche, mañana por la mañana estaremos muy cansados, pero ellos estarán listos.
If we work all night, tomorrow morning we will be very tired, but they will be ready.
Los niños estarán con sus abuelos hasta el domingo.
The children will be with their grandparents until Sunday.
When to use 'Estar'
Remember to use estar (and thus estarán) for temporary things: where something is located, how someone feels, or if a condition changes (like being clean or dirty).
Future Tense Structure
Estarán is formed by taking the whole infinitive (estar) and adding the 'án' ending for the 'they/you plural' form.
Mixing Ser and Estar
Mistake: “Mis amigos serán en la casa.”
Correction: Mis amigos *estarán* en la casa. (Location is temporary, so use a form of *estar*.)
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.