Slang meaning

What does bc mean?

In texts and comments, bc means “because.” It does the same job as the full word, just faster: “can't come tonight bc of work.” Written in capitals after a number or a place, BC is something else, usually a date (500 BC) or the Canadian province of British Columbia.

Updated 6 October 2026

Short for “because”: people type bc to give a reason fast, as in “late bc traffic.”

Stands for: BecauseTone: neutral and casual; just a shortcut

What bc can mean

1. Because

The texting meaning, and the one you'll meet most on social media. bc links something to its reason: “skipping the gym bc my legs are dead,” “following bc of the dog videos.” It covers every use of “because,” including the clipped internet style that drops the “of” and keeps one word: “bc reasons,” “bc rain.” The older b/c, with a slash, means the same thing.

2. BC in dates

In history posts, museum captions and travel content, BC means “before Christ,” the traditional label for the years before year 1 of the calendar most of the world uses. It goes after the number, as in 3000 BC, and those years count down, so 3000 BC is older than 2000 BC. Many writers now use BCE, “before the common era,” for the same years.

3. British Columbia and birth control

After a town name, BC is British Columbia, the Canadian province: “pickup in Kelowna, BC.” You'll see it in Marketplace listings and local groups across the province. In health and wellness posts, “bc” can also mean birth control, as in “my bc made my skin worse.” The topic of the post usually gives it away.

How people use it on Instagram and Facebook

  • DMs and group chats

    This is where bc does most of its work: the quick reasons people give for being late, leaving early or not replying. It's typed in lower case, mid-sentence, and it carries no mood of its own, so take the tone from the rest of the message.

  • Comments and captions

    Commenters use it to explain a reaction: “saving this bc I always overcook pasta,” “crying bc this is my cat.” Captions love the one-line shrug, “new hair bc why not,” where the reason is that there isn't one.

  • Facebook groups and Marketplace

    Both meanings meet here. A seller writes “selling bc we're moving” in one listing and “pickup in Victoria BC” in the next. Capitals after a place name mean the province; lower case in the middle of a sentence means “because.”

bc in real conversations

  • Direct message
    can't make it tonight bc my car won't startno stress, want me to pick you up?
  • Instagram comment
    saving this bc i overcook pasta every single timeThe timer trick in step 2 fixes that. Tell us how it goes.
  • Caption
    New hair bc why not ✂️
  • Facebook comment
    Selling our crib bc the little one has outgrown it. Pickup in Victoria BC, $60Is it still available? I could collect on Saturday morning.
  • Story reply
    bc u asked: yes, the jacket is thriftedknew it, nothing new looks that good

How to reply to bc

Where it comes from

Spoken English has long clipped “because” to ’cause, and casual writing spells it cos or cuz. b/c and bc are the written shortcuts; bc, without the slash, is the one people type in chats. In January 2014 the American Dialect Society named “because” its Word of the Year for 2013, for its new internet use before a noun or adjective, as in “because science.”

Questions people ask

Is it bc or b/c?

Both mean “because.” b/c with a slash is the older note-taking style and still turns up in emails and study notes. Plain bc is the usual form in chats, comments and captions. Neither is wrong; in a text the slash just looks a little formal.

What does “bc why not” mean?

It's a shrug in words: I did it because I felt like it, no excuse needed. You'll see it under spontaneous purchases, new hair colours and last-minute trips. It's cheerful rather than defensive, and the right reply is usually to cheer them on.

How is bc different from cuz?

They mean the same thing. cuz (also cus or cos) copies how “because” sounds when it's said quickly, so it reads chattier. Watch for its second meaning: “my cuz” is a cousin, not a reason.

How can I tell if BC is a date?

Look for a number in front of it. “The temple dates to 400 BC” is a date. A sentence where bc is followed by a reason means “because.” And BC after a town, as in “Kamloops, BC,” is the province.

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