Spanish · Real conversations
How to say “I'll let you know.” in Spanish
Promise to give the other person an update.
Te aviso.
I'll let you know.
Say what you will confirm or when you expect to know if that detail matters.
Use it in three situations
Confirming availability
Te aviso.
I'll let you know.
Checking a detail
Te aviso mañana.
I'll let you know tomorrow.
Following up on a plan
Te aviso cuando llegue.
I'll let you know when I arrive.
What to watch for
Do not use this alone when the other person needs a confirmed answer immediately.
Read the whole expression before replacing a detail. The natural wording may use a different order or construction from the English sentence.
Your turn
Imagine changing plans. Say this in Spanish: I'll let you know tomorrow.
Reveal a sample reply
Te aviso mañana.
I'll let you know tomorrow.
Build a useful exchange
Explain a change and offer a clear next step.
This expression in other languages
A note on speaking Spanish
These guides use broadly understandable Latin American Spanish. Tú is familiar and usted is respectful or formal, with important regional variation. Me gustaría and ¿podría …? are useful for considerate requests.
Keep accent marks and opening question marks. Some regions choose different everyday words. Follow the complete example rather than substituting English words one by one, especially with pronouns and expressions of preference.
