Title case capitalises the first letter of the significant words in a heading while keeping short function words — articles, short conjunctions, and short prepositions — lowercase, unless they are the first or last word.

Which words stay lowercase?

Common small words such as a, an, and, as, at, but, by, for, in, of, on, or, the, to, and up are kept lowercase in the middle of a title, but capitalised when they appear first or last.

Does it change acronyms?

It capitalises the first letter of each word and leaves the rest as typed, so fully uppercase acronyms you enter are preserved rather than being forced to lowercase.

Yes. The conversion runs entirely in your browser and nothing you type is uploaded.

Which words are kept lowercase?

Short function words such as a, an, and, as, at, but, by, for, in, of, on, or, the, to, and up stay lowercase in the middle of a title but are capitalised if they appear first or last.

Does it change words I typed in capitals?

It capitalises the first letter of each word and leaves the remaining letters as you typed them, so uppercase acronyms like NASA or USB are preserved rather than lowercased.

Title Case Converter

How to use Title Case Converter

The title case converter capitalises your text the way headlines, titles, and headings are styled — the first letter of each significant word is capitalised, while short function words like “the”, “of”, and “and” are kept lowercase unless they begin or end the line. Paste a sentence and it applies these standard style-guide rules instantly, so your titles look polished and consistent without you having to remember which little words to leave alone. It works line by line and runs entirely in your browser.

Paste or type your text.
Read the title-cased version on the right.
Copy the result for your title or heading.
Edit the input and the output updates instantly.

Your data never leaves your device — 100% private processing.

The small-word rule

What separates title case from simply capitalising every word is how it treats short function words. Articles (a, an, the), coordinating conjunctions (and, but, or), and short prepositions (of, in, on, to) are left lowercase when they fall in the middle of a title, because capitalising them adds visual noise without adding meaning. The important exception is position: the first and last word of a title are always capitalised, even if they are on the small-word list, so “To Be or Not to Be” capitalises the opening and closing “To” but not the middle “to” or the “or”. This converter encodes that rule, giving results that match how editors and style guides actually format titles.

Title case versus sentence case

Title case is not the only convention, and it helps to know when to use it. Title case capitalises most words and suits short headlines, book and song titles, and navigation labels. Sentence case, by contrast, capitalises only the first word and any proper nouns, and is increasingly preferred for longer headlines and user-interface text because it reads more naturally and is easier to scan. Neither is “correct” everywhere — pick the one your style guide specifies and apply it consistently. This tool produces title case; if your project uses sentence case, capitalise just the opening word and leave the rest as ordinary prose.

Worked examples

Headline

Inputs: the lord of the rings

Result: The Lord of the Rings

Edge words

Inputs: to be or not to be

Result: To Be or Not to Be

Acronym

Inputs: using the NASA api

Result: Using the NASA Api

Glossary

Title case: A capitalisation style where significant words are capitalised and small words are not.
Sentence case: Capitalising only the first word of a title plus any proper nouns.
Function word: A short grammatical word such as an article, conjunction, or preposition.
Proper noun: A name of a specific person, place, or thing, always capitalised.

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Title Case Converter

How to use Title Case Converter

The small-word rule

Title case versus sentence case

Worked examples

Glossary

Related reading

Frequently Asked Questions

Why use Title Case Converter?

Common use cases

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