Title Case Converter

The Title Case Converter capitalises the first letter of every word and lowercases the rest, so the lord of the rings becomes The Lord Of The Rings. Acronyms typed in capitals, such as UPSC or NASA, are left alone, and contractions like don't keep a small letter after the apostrophe. That makes it a quick first pass for headings, file names, playlist titles and list items.

The exact capitalisation rules

1. Acronyms are kept. A word written entirely in capitals with at least two letters, such as UPSC, IPL or NASA's, stays exactly as typed.
2. Every other word is lowercased, including words in mixed case.
3. First letters become capitals. A letter a to z is capitalised at the start of the text, right after a space, tab, line break, hyphen, underscore, opening bracket or double quote, and after a single quote that opens a word.
4. An apostrophe inside a word does not trigger a capital, so Don't, It's and Beginner's come out correctly. The exception is the O' and D' name prefixes: o'brien gives O'Brien and d'souza gives D'Souza.

So state-of-the-art becomes State-Of-The-Art, (2024 edition) becomes (2024 Edition) and 'hello world' she said becomes 'Hello World' She Said. A slash or full stop does not trigger a capital: world/foo.bar gives World/foo.bar.

Worked example

Input: how to prepare for UPSC in 6 months: a beginner's guide

Output: How To Prepare For UPSC In 6 Months: A Beginner's Guide

The acronym keeps its capitals and the possessive stays lowercase. A second test, don't stop, it's NASA's plan, returns Don't Stop, It's NASA's Plan.

Results worth a second look

• Input that is all capitals. When the whole text is uppercase, such as a heading copied from a circular, everything is lowercased first so it still converts. Acronyms can't be told apart from other words then, so HOW TO PREPARE FOR UPSC gives How To Prepare For Upsc.
• Shouted words in ordinary text. The opposite also happens: in i love NEW DELHI in winter, both capitalised words look like acronyms and stay in capitals.
• Acronyms attached to other letters. The check covers whole words, so US-based becomes Us-Based. An acronym typed in lowercase, such as gst, becomes Gst.
• Mixed-case brands. iPhone becomes Iphone and YouTube becomes Youtube.
• Any word starting o' or d'. The name rule also catches o'clock, which becomes O'Clock.

Letters with accents at the start of a word, such as é, are not capitalised, and scripts without capital letters, such as Hindi, pass through unchanged.

Every word capitalised vs style-guide title case

This converter produces what is sometimes called "start case". Major style guides, including AP, Chicago and APA, instead keep short articles, conjunctions and prepositions such as a, and, for, in, of, the and to in lowercase unless they begin the title or follow a colon. They differ on details, such as whether a four-letter preposition like "with" is capitalised. A style-guide version of the example would be:

How to Prepare for UPSC in 6 Months: A Beginner's Guide

Since the acronym and the apostrophe already come out right, the only manual step is lowercasing those small words, which takes a few seconds for a typical blog heading.

When to choose a different case

• Sentence-style headings: many websites and apps capitalise only the first word of a heading. The Sentence Case Converter does that.
• Web addresses: titles used in URLs should be lowercase with hyphens; the slug generator handles that conversion.
• Variable names: PascalCase and camelCase remove the spaces as well as changing capitals; use the code case converter for those.

Lists typed entirely in capitals, such as a register of student names or a contact export, convert cleanly: RAHUL SHARMA becomes Rahul Sharma. If even one line of the list is in lowercase, the capitalised names count as acronyms and stay as they are, so pass the list through the lowercase converter first.