# let me know

idiom · CEFR A2

Source: https://englishreference.com/idiom/let-me-know
Updated: 2026-04-22

## Meaning

Use this phrase to ask someone to tell you information at a later time.

## Examples

- Please let me know when you arrive.
- If you decide to come to the party on Friday, please let me know by tomorrow morning.
- Should you require any further information regarding the project timeline, please let me know at your earliest convenience.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.