Difference between to know and I'll contact you in Korean

알다·연락할게요

to know

알다to know

알다 (to know) means to have information in your mind or to be familiar with someone, something, or a place. You use it when you know a fact, know a person, or know the answer. It is very common in daily Korean, especially in sentences like "I know" and "Do you know?".

How to say to know
I'll contact you

연락할게요I'll contact you

This phrase means “I’ll contact you” or “I’ll get in touch.” People use it when they want to call, text, or message someone later. It sounds friendly and is common at the end of a conversation or when making plans.

How to say I'll contact you

The difference

알겠어요 means “I understand” or “Okay.” It shows you understood, but it does not mean you will message or call later.