you'll find out

Call him and you'll find out.

Appelle-le et tu le sauras.

— Paris Je T'aime (2006)

You'll find out in due time.

Tu le découvriras en temps voulu.

— The Irony of Fate, or Enjoy Your Bath! (1976)

You'll find out.

Tu le découvriras.

— Au Revoir les Enfants (1987)

You'll find out later.

Tu le découvriras plus tard.

— I Saw the Devil (2010)

You'll find out how much farther it is.

Tu verras combien de temps il reste.

— Central Station (1998)

You'll find out when you become a parent.

Tu le sauras quand tu seras parent.

— Broker (2022)

You'll find out soon enough.

Vous le saurez bien assez tôt.

In about ten minutes, you'll find out more.

Dans une dizaine de minutes, vous en saurez davantage.