Content3 min read
Title Case, Sentence Case, and Which One Ranks
Title case and sentence case are conventions, not rules, and the styles disagree with each other. Here is what each does and which to pick.
Title case capitalises the significant words in a heading; sentence case capitalises only the first word and proper nouns. Neither is a ranking factor. What matters is picking one and applying it everywhere, because inconsistency is the thing readers notice.
Title case and sentence case, defined
Title Case Looks Like This. Major words capitalised, small ones not.
Sentence case looks like this. First word, proper nouns, nothing else.
The complication is that "major words" is defined differently by every style guide. AP capitalises words of four letters or more; Chicago capitalises by part of speech; APA capitalises words of four letters or more in headings but uses sentence case for reference titles. They disagree about "with", "from" and "over" specifically, which is why two carefully edited publications can capitalise the same headline differently and both be right.
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Text Case ConverterEleven casings at once, each one a click away from your clipboard.The converter applies each convention consistently, which is the practical answer to a question that has no single correct one.
Which to use
Sentence case for most web writing, social posts and product interfaces. It reads faster, it looks less shouty on a phone, and it makes proper nouns stand out because they are the only capitals.
Title case for formal publications, book and article titles inside prose, and anywhere a house style requires it.
Neither for ALL CAPS. It is slower to read — the word shape that helps recognition is lost — and it reads as shouting in every context where it is not a logo.
Does case affect SEO?
No. Search engines are indifferent to capitalisation, and URLs should be lowercase for entirely different reasons — some servers treat paths as case-sensitive, which is a real source of duplicate pages.
Where case does have an effect is click-through. Sentence case tends to read as informative and title case as promotional, and which performs better depends on the audience rather than the algorithm. It is worth testing on your own titles rather than adopting somebody else's conclusion.
FreeMentioned in this article
Headline & Title AnalyzerScore a title, and get the specific edits that would improve it.The analyzer scores a line on clarity and length rather than case, which is the more consequential half — how to write headlines.
Consistency is the actual rule
Pick one, write it into your own style notes, and apply it to headings, social posts, button labels and email subject lines alike. Mixed case across a site is the kind of detail that makes work look unedited even when nobody can say why.
Three practical notes:
- Never capitalise for emphasis. Bold exists.
- Watch the truncation. Case does not change where a title is cut —
YouTube title length — but it changes how the fragment reads.
- Check your CMS. Some themes apply CSS
text-transform, which capitalises visually
while the underlying text stays as written. That is fine until the text is used somewhere else.
FreeMentioned in this article
Social Media Character CounterOne box, every platform’s limit, and exactly where each one cuts you off.The style guides themselves are the reference when a house style has to be settled: the Chicago Manual of Style and AP's stylebook are the two most commonly adopted.
What is title case?
Capitalising the significant words in a heading, with articles and short prepositions left lowercase. The exact definition of "significant" varies by style guide.
Should I use title case or sentence case?
Sentence case for web and social writing; title case for formal publications. The important part is consistency.
Does capitalisation affect SEO?
No. Search engines ignore case. URLs should still be lowercase, for server and duplication reasons rather than ranking ones.
Why do style guides disagree about title case?
They define "major words" differently - by length in AP, by part of speech in Chicago - so short prepositions are capitalised in one and not the other.
Convert a heading between conventions consistently: text case converter.
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