Case Converter

Title case style guides (AP, APA, Chicago, MLA) agree on the basics: capitalise the first and last important words and all major words, and keep short articles, conjunctions and prepositions in lower case unless they start the title. This tool lower-cases these minor words: a, an, the, and, but, or, for, nor, on, at, to, from, by, over, of, in, as, via, vs.

The first word of the text, and the first word after a colon or full stop, is always capitalised. Guides differ on longer prepositions such as "about" or "between", so check your publication's style if it is strict about them. If you simply want every word capitalised, use Capitalize Words instead.

Basic converters lower-case everything before converting, which turns "NASA" into "Nasa" and "API" into "Api". This converter looks at each sentence: if most of its words are in capitals, it treats the sentence as shouted and converts it; otherwise it keeps all-caps words as acronyms. That means you can paste a paragraph that mixes normal sentences, a caps-lock sentence and product names, and get a sensible result in one pass.

Capitalize Words, aLtErNaTiNg and iNVERSE case are deliberately literal and change every letter.

Search engines treat upper and lower case the same, so changing case does not affect rankings directly. It does affect click-through: a consistent title style looks more trustworthy in search results. Check your converted titles with the Title Tag Checker.

Avoid long passages in ALL CAPS. They are harder to read because word shapes disappear, and some screen readers spell out capitalised words letter by letter. If you need emphasis, use bold or CSS text-transform so the underlying text stays in normal case.

Text copied from PDFs often comes with odd spacing as well as odd capitalisation. Run it through Remove Extra Spaces first, then convert the case. To turn a title into a URL, use the Slug Generator.