Okay, so the other day I was scrolling through TikTok, and I kept seeing this “631” thing pop up in comments and captions. I was like, “What the heck is 631?” I’m usually pretty good at keeping up with internet slang, but this one totally stumped me.
So, first things first, I hit up Google. You know, the usual routine. Typed in “631 meaning” and… nothing super clear came up. A bunch of random stuff, some numerology things, but nothing that screamed “Aha! This is the TikTok meaning!”
Next, I went back to TikTok and started digging deeper. I clicked on a few videos with “631” in the caption and scrolled through the comments. Still, mostly confusion. Some people were asking the same question as me, others were using it in ways that didn’t quite make sense.

I spent a good hour on this, I’m not even kidding. I felt like I was going crazy. I even asked a few of my younger cousins if they knew, and they just shrugged. Gen Z, failing me!
Finally, I decided to broaden my search. I started looking at Urban Dictionary, and some of the reddit. But, finally I find it!.
I get it!
I saw a post and explain: “631” can mean “I love you”.
- 6 letters in “I love you”
- 3 words in “I love you”
- 1 meaning.
This meaning make sense to me! I had solved the mystery! So next time you see “631” on TikTok, or anywhere else online, remember it mean “I love you”.