Capitalized Case Converter

What is capitalized case and when should you use it?

Capitalized case - also called start case or word case - is a capitalization style in which the first letter of every word is uppercase and the remaining letters are lowercase, with no exceptions. "the lord of the rings" becomes "The Lord Of The Rings". That mechanical all-words-capitalized rule is precisely what separates it from title case, where the small connecting words would have stayed lowercase.

Where the style genuinely fits:

• Navigation labels and buttons - Home, About Us, Contact Sales. Interface guidance from Apple's Human Interface Guidelines and Microsoft's Fluent design system both accept this style for short controls
• Table headers and form field labels, where each cell holds one or two words and consistency reads as tidy
• Proper nouns imported in the wrong case - normalizing JOHN SMITH or new york city from a database export
• Product and feature names in marketing copy and spec sheets
• Slide titles and section headers in decks, where a style guide is overkill

Capitalized case vs. title case vs. sentence case

The three are frequently confused. Sentence case capitalizes only the first word and any proper nouns ("How to write a good headline") and is the house style for the BBC, the Guardian, and most modern product UI copy. Title case applies editorial rules - AP style lowercases prepositions of three letters or fewer, Chicago lowercases articles, coordinating conjunctions, and all prepositions regardless of length, and APA lowercases words under four letters. Capitalized case ignores all of that and capitalizes everything, which is why it is a poor choice for real headlines and a good one for short labels.

The main gotcha is acronyms and stylized names. Because the converter lowercases first and then capitalizes each word's initial, NASA comes out asNasa, iPhone as Iphone, andMcDonald as Mcdonald. That lowercasing pass is deliberate - it is what lets the tool rescue text that arrived in ALL CAPS - but it means you should scan the output and restore any brand names or initialisms by hand. Hyphenated words are treated as two words, so well-known becomesWell-Known.

The transformation is a single regular expression applied in your browser. No text is uploaded, there is no length cap, and the output updates as fast as you can type.