Free Title Case Converter for APA, MLA, Chicago and AP
Capitalize any title correctly in every major style at once. Type a heading and see APA title case, MLA, Chicago, AP headline case and APA sentence case side by side, each following its style guide's real rules, with acronyms like DNA and mRNA protected. Free and unlimited.
Type a title above and every conversion appears here instantly: APA, MLA, Chicago, AP, sentence case and the basic transforms.
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How to convert a title in three steps
Type or paste your title
One heading or a whole list, one per line. Everything converts live as you type.
Compare the styles
APA, MLA, Chicago, AP and sentence case render side by side, so the rulebook differences are visible at a glance.
Copy the one you need
Every row has its own copy button, ready to paste into your manuscript, essay or CMS.
The real rules, not naive capitalization
Rulebook-accurate styles
APA's four-letter rule, MLA and Chicago's preposition handling, AP headline case and APA sentence case, each implemented separately.
Every style side by side
No dropdown round trips: all conversions render at once, which is the fastest way to see how the styles differ.
Acronyms protected
DNA, ANOVA, mRNA, iPhone and LaTeX stay exactly as typed; subtitles after a colon are capitalized in every style.
Instant and private
Conversion happens in your browser as you type. Nothing is uploaded, and there is no limit on how much you convert.
Title case, sentence case, and why style guides disagree
Capitalizing a title looks trivial until three style guides give you three different answers. The disagreement is systematic. APA works by word length: anything of four letters or more is capitalized, which is why With Every Method reads differently in APA than in MLA. MLA and Chicago work by part of speech: prepositions stay lowercase no matter how long, so throughout and between stay down even mid-title. AP, built for headlines, splits the difference with its own short-word list.
Sentence case is the quiet exception that trips up more authors than any headline rule: APA reference lists set article and chapter titles in sentence case even though the same paper's headings use title case. Getting that wrong is one of the most common formatting corrections journals and graders make, and it is entirely mechanical, exactly the kind of error a rules engine should catch instead of a tired human.
AI drafting adds a modern twist: generated headings tend to arrive in inconsistent capitalization, Title Case in one section and sentence case in the next, and readers notice the inconsistency before they can name it. Converting every heading through one style in one pass is the fastest way to make a stitched-together draft read as one document. For the prose between the headings, the TextPulse humanizer does the same job at the sentence level.
Who uses the title case converter
Students
Format essay titles and reference-list entries correctly for APA and MLA without memorizing the rulebooks.
Researchers and academics
Set manuscript headings in title case and reference titles in sentence case, the pairing APA actually requires.
Marketing and SEO teams
Keep headlines, H1s and email subject lines consistent in AP or house style across every channel.
Editors and publishers
Normalize capitalization across chapters and contributor drafts in one pass per heading list.
Headings done.
Now make the prose sound human.
The TextPulse humanizer rewrites AI-flavoured rhythm and word choice in the text under your headings, with citations frozen and every edit shown as a tracked change. Free demo included.