Ever received a text ending with “LMK” and felt momentarily confused? You’re not alone.

This tiny three-letter acronym has become ubiquitous in digital communication, but its meaning isn’t always obvious to everyone.

What Does LMK Stand For?

LMK stands for “Let Me Know.” Simple as that! It’s a quick way to request information or feedback from someone.

Think of it as the digital version of saying, “Get back to me on this when you can.”

People use LMK in various contexts:

• When making plans: “I might go to the concert Saturday night. LMK if you want to join!”

• When offering help: “I heard you’re moving this weekend. LMK if you need an extra hand.”

• When seeking opinions: “Just watched the new Marvel movie. LMK what you thought of it!”

How to Use LMK in Everyday Communication

LMK isn’t just a standalone phrase. It works smoothly in different parts of a conversation:

• As a direct request: “LMK your thoughts on this proposal.”

• At the end of messages: “I’m free all weekend. LMK what works for you.”

• In response to questions: “I’m not sure about the meeting time. LMK when you find out.”

The beauty of LMK lies in its versatility. You can drop it into casual chats with friends or use it in semi-formal work communications.

It strikes that perfect balance between being conversational yet clear.

LMK vs. Similar Text Acronyms

LMK has some cousins in the texting world you might encounter:

• LMKWYT: “Let me know what you think”

• LMKASAP: “Let me know as soon as possible”

• TMB: “Text me back”

• WB: “Write back”

Each serves a similar purpose but with slightly different urgency or specificity. LMK is generally the most neutral and widely used.

When should you use LMK (and when not to)?

LMK works best when:

• You need a response but aren’t in a rush

• You’re giving someone options and want their input

• You’re offering help or information that might be needed later

It might not be ideal when:

• You need an immediate response (try “urgent” or “ASAP” instead)

• In very formal business communications (spell it out instead)

• When speaking to someone unfamiliar with text acronyms

Fun fact: The Evolution of LMK

Like many text abbreviations, LMK gained popularity during the early text messaging era when character limits and tiny keyboards made brevity essential. 

It’s since transcended those original limitations to become part of our digital vernacular, appearing everywhere, from professional emails to Instagram comments.

So next time you see those three letters pop up in a message, you’ll know exactly what to do—somebody wants your input, so let them know!