Good to Know – Meaning & Example Sentences

“Good to know” is an expression that comes up in plenty of conversations. If you’re not familiar with it, you might be worried you’re missing some nuances or context. This article will explain what “good to know” means, and you’ll be able to use it.

What Does “Good to Know” Mean?

“Good to know” is an expression that people use when they receive useful information. By saying “good to know”, they let the other party know that the information was well-received. It’s a simple and direct way of expressing your appreciation for the information.

Good to Know Meaning

It might happen that you give someone information, and they reply to you with “good to know”. In that situation, you can rest assured knowing that they’re thankful for the information.

Take this example conversation:

  • I’ve packed away all of our food so you just have to take a container home with you.
  • That’s good to know, thank you.

In the above scenario, one person is thanking the other for giving them information that they needed. Thus, they express that the information is useful.

How to Use “Good to Know” in a Sentence

Using “good to know” in a sentence is remarkably simple. You just use this phrase whenever someone gives you useful information. If it’s good that you know the information, you say “good to know”.

Here are some example conversations that you can take a look at:

  • This is the house key, and this is the garage key.
  • It’s good to know, good to know.

In the above exchange, the person is saying “good to know”. This is because knowing which key is which is useful information. Therefore, it’s good to know.

Here’s another example:

  • I’m sending you the information in an email labeled “EXTREMELY IMPORTANT”.
  • Good to know that, thanks.

In this example, the person says “good to know” because now they know how to identify the email. Therefore, they’ve been given useful information by the other person.

Take this example conversation into account as well:

  • I’m arriving from the airport, you will find me in a green van next to our house.
  • Good to know, I’m nearly there.

The information that the first person is inside a green van is useful for the second person. To express that fact, they use “good to know”.

Is It Okay to Say “Good to Know”?

Using “good to know” is perfectly okay, and it’s not normally rude. There are situations in which people might use “good to know” sarcastically, in a rude way. However, these situations are the minority, and you can otherwise use the expression without issues.

You can use “good to know” in plenty of situations. You can use it whenever someone tells you information that you find valuable or useful. If someone gives you a piece of information that you need, you say “good to know”.

Good to Know – Synonyms

You use “good to know” as a way to express that a piece of information is valuable to know. There are other expressions that can accomplish this same goal without issues. Here are some synonym expressions for “good to know”:

  • Perfect
  • Great to hear
  • Love to hear it
  • That’s great
  • Noted


“Good to know” is used to express your appreciation for information that is valuable. It’s important to remember that “good to know” is not a rude expression. However, it can be used in a rude way. Using “good to know” when someone gives you good information is completely normal and correct.