How to Say "will know" in Spanish
The Spanish word for “will know” is “sabrá” — B1 level. This is a very common word in everyday Spanish.

Examples
Ella sabrá la verdad pronto.
She will know the truth soon.
Usted sabrá qué hacer cuando sea el momento.
You (formal) will know what to do when the time comes.
¿Quién sabrá la clave? Pregúntale a él.
Who will know the code? Ask him.
Irregular Future Stem
The verb 'saber' changes its stem in the future tense from 'sabe-' to 'sabr-'. You add the future endings (-á, -ás, -é, etc.) to this new stem.
Future Tense for Speculation
In Spanish, the future tense can also be used to guess or speculate about what is happening right now: '¿Qué hora sabrá ser?' (I wonder what time it is?)
Saber vs. Conocer
Mistake: “Using 'conocerá' for facts or skills ('Ella conocerá la capital').”
Correction: Use 'sabrá' for facts and information ('Ella sabrá la capital'). 'Conocerá' is for future familiarity with people, places, or things.
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