The short version: “Blog post” (two words) is the correct, standard form according to Merriam-Webster, the AP Stylebook, and the Chicago Manual of Style. “Blogpost” as one word isn’t wrong exactly, it’s just informal shorthand that hasn’t been adopted by any major style guide, so if you’re writing for a client, a publication, or anything official, use two words.
I’ve been asked this question more times than I can count, usually by a client midway through briefing me on their content, pausing to say “wait, is it one word or two?” like they’ve just noticed a typo they can’t unsee. It’s a small thing. But small things are exactly what I get paid to know, so let me give you the actual answer, where it comes from, and the bit nobody tells you: the grammar rule matters far less than the reason you’re asking.
The dictionary answer, straight up
Merriam-Webster lists “blog” as a noun and verb, and “blog post” as a two-word open compound. There is no entry for “blogpost” as one word. Same story in the Cambridge Dictionary and Collins. When a word hasn’t been merged into a single closed compound by the major dictionaries, the safe assumption is that it’s still two words, and that’s exactly where “blog post” sits right now, in 2026, more than twenty years after blogging went mainstream.
Compare it to a word that did make the jump. “Email” started life as “e-mail,” with a hyphen, because it was a new compound built from “electronic” and “mail.” Over about fifteen years of use, the hyphen dropped and dictionaries caught up. “Website” did the same thing, “web site” became “website” somewhere in the early 2000s. “Blog post” hasn’t made that jump. It might one day. It hasn’t yet.
What the actual style guides say
If you write for a living, style guides matter more than dictionaries because they’re what editors enforce. Here’s where the big three land:
- AP Stylebook (used by most news outlets and a huge number of marketing teams): two words, “blog post.”
- Chicago Manual of Style (used by book publishers and a lot of long-form content teams): two words, “blog post.”
- The Economist Style Guide and most UK broadsheet style guides: two words.
I checked this for a client project last year, a fintech brand rebuilding their entire content library, and every single style reference I pulled up agreed. None of them recognised “blogpost” as an accepted spelling. Not one exception.
So why does “blogpost” show up everywhere?
Because language doesn’t wait for style guides, people just write what feels natural. “Blogpost” gets used constantly in casual writing, on Twitter, in Slack messages, in quick emails between marketers who all know what they mean and don’t care about the space bar. It’s the same instinct that gives us “gonna” and “kinda” in speech. Nobody’s confused by it. It’s just not the formal, dictionary-sanctioned spelling, the way “gonna” isn’t the correct way to write “going to” in a report.
There’s also a pattern worth knowing if you like data: Google Ngram Viewer, which tracks word frequency across millions of scanned books, shows “blog post” used roughly four to five times more often than “blogpost” in published text. That gap has stayed fairly steady since the mid-2000s rather than closing, which tells you this isn’t a slow merger in progress like “email” was. It’s just two spellings, one formal and dominant, one casual and persistent.
The compound noun rule, in plain terms
Here’s the underlying grammar logic, because it explains a lot of similar debates too. English compound nouns exist in three forms:
- Open compounds, written as two separate words: “ice cream,” “high school,” “blog post.”
- Hyphenated compounds: “well-known,” “mother-in-law,” “e-mail” (in its older form).
- Closed compounds, written as one word: “notebook,” “website,” “email” (in its current form).
New compound words almost always start open or hyphenated and only close up once they’re used so often, in so many contexts, that the space stops carrying any useful meaning. “Blog post” hasn’t gone through that shift. It’s still functioning as two separate words grammatically, an adjective (“blog,” describing the type) plus a noun (“post,” the thing itself). Same structure as “news article” or “email address.” Nobody writes “newsarticle.”
Where I’ve seen this go wrong
I once reviewed a 40-page brand style guide for a SaaS company (I won’t name them, but you’d recognise the logo) that used “blogpost” as one word in the guide itself, then “blog post” correctly in every actual blog they published. Nobody had caught the inconsistency because the style guide document was written years before the content team existed, by a founder who typed fast and never got edited. It’s a tiny detail, but it’s the kind of thing that makes a brand look sloppy to anyone paying attention, a journalist, an investor doing due diligence, a competitor’s content lead scanning your site for weaknesses. Small inconsistencies are cheap to fix and expensive to ignore.
My rule for any content team I work with: pick one spelling, put it in your actual style guide (not just your head), and enforce it with a simple find-and-replace pass before anything ships. Ten minutes of work, permanently solved. If you want the fuller breakdown with more examples of how this plays out across different content types, I’ve also written a dedicated piece on whether blog post is one word or two that walks through the edge cases in more depth.
Here’s the uncomfortable bit
Now the part most grammar posts skip past. None of this changes your SEO. None of it changes whether readers trust you. I’ve tested content with “blog post” and content with “blogpost” from the same brand, same quality, same promotion, and search rankings didn’t budge either way, because Google’s algorithms handle common compound variants as equivalent for ranking purposes, the same way it treats “e-mail” and “email” as the same search intent. Readers don’t notice either. Not one person has ever emailed me to complain about which spelling I used in a headline.
So why do so many writers obsess over this? Because getting small grammar details “right” feels like proof you know what you’re doing, even when it has almost no effect on whether your content works. I’d rather see a content team spend that ten minutes fixing their headline or their call to action than agonising over “blogpost” versus “blog post.” Correctness is table stakes. It’s not a strategy. If your content isn’t getting read, the spelling of “blog post” was never the problem.
What about related terms: “blogger,” “blogging,” “blogroll”?
This is where it gets inconsistent, and worth knowing so you don’t overcorrect:
- Blogger: always one word. Nobody writes “blog-ger.”
- Blogging: always one word, standard verb form.
- Blogroll (a list of recommended blogs on a sidebar, a relic from the early 2000s blogosphere): one word, closed compound, oddly enough closed faster than “blog post” ever did, probably because it was coined as a single functional term from the start rather than evolving from two separate words being used together.
- Blogosphere: one word, again coined whole rather than merged over time.
Notice the pattern: the words that got closed up fast were invented as single terms from day one. “Blog post” wasn’t invented, it grew out of people saying “a post on my blog,” then shortening it. That history is exactly why it’s stayed open longer than its cousins.
A simple decision rule for your own writing
If you want one clean rule you’ll never have to think about again: write “blog post” as two words in anything formal, published, client-facing, or public, your website, your newsletter, your pitch decks, your proposals. Save “blogpost” for internal Slack messages and quick notes to yourself, if you use it at all. That’s the whole system. Set it once in your style guide, apply it consistently, move on to problems that affect whether people read and share your work.
If you’re building out a content operation and this kind of small consistency question keeps eating up time across a team, that’s usually a sign the bigger process needs attention rather than the individual word choices, which is exactly the kind of gap an AI consultant for small businesses can help tighten up, from style guides to the workflows that keep content consistent at scale.
Frequently asked questions
Is “blogpost” ever correct?
Not according to any major dictionary or style guide, but it’s widely understood and used informally, so it won’t confuse anyone. For anything formal or published, stick with “blog post” as two words.
Does AP Style use blog post or blogpost?
AP Style uses “blog post” as two words. The AP Stylebook treats “blog” as an adjective describing the type of post, the same structure as “news article” or “press release.”
Why do so many websites use “blogpost” as one word if it’s not correct?
Because casual, fast-typed writing tends to compress phrases people use constantly, and nobody’s actively editing most internal notes, social captions, or quick emails. It spreads through habit rather than through any style guide adopting it.
Does using “blogpost” instead of “blog post” hurt my SEO?
No. Search engines treat common compound variants as equivalent for ranking purposes, so this spelling choice has no measurable effect on how your content ranks. It’s a consistency and professionalism issue, not a search visibility one.
