Case Converter: Eleven Cases in One Click

How to use the Case Converter

1. Paste or type your text into the box — or press Load sample to convert the two-sentence demo.
2. Choose a style from the Case style dropdown — Title Case is preselected, the house style for headings.
3. The result updates the moment you switch, so you can preview all eleven styles against your actual text before deciding.
4. For code, jump straight to camelCase, PascalCase, snake_case or kebab-case: the converter extracts the words and rebuilds a clean identifier from them.
5. Copy the result with one click, or download it as a .txt file.

About this tool

Re-typing text just to fix its capitalisation is nobody's idea of fun. This converter restyles whole documents in a click: shouty paragraphs become calm sentence case, headlines become clean Title Case, and phrases become developer-friendly camelCase, PascalCase, snake_case or kebab-case identifiers. Title Case here lowercases the text first and then capitalises the first letter of every word, which makes it perfect for fixing ALL-CAPS source material. Sentence case is smarter still — it capitalises the start of every sentence, so pasted drafts come out looking professionally edited. The four code styles work differently from the display styles: they first break your text into its words, then join the words back together — camelCase and PascalCase with no separator and a capital on each following word, snake_case with underscores, kebab-case with hyphens. Punctuation from the original is left behind, which is exactly what an identifier needs: feed in “Quarterly Sales Report (Final)” and snake_case hands back a clean quarterly_sales_report_final. One thing to know about Title Case: it capitalises every word equally — “the” and “on” included. That is a deliberate, predictable rule, and the right starting point for headings rescued from ALL-CAPS sources. If your style guide prefers small joining words in lowercase, as many editorial styles do, convert first and then lower those few words by hand. Two close cousins finish the job: turn the converted heading into a web address with the slug generator, or restyle it for a profile or post with the fancy text generator.

Worked example

The sample text, converted four useful ways: You type

the quick brown fox jumps over the lazy dog. THIS SENTENCE needs consistent formatting before it goes on the website.

You get

Title Case: The Quick Brown Fox Jumps Over The Lazy Dog. This Sentence Needs Consistent Formatting Before It Goes On The Website.
Sentence case: The quick brown fox jumps over the lazy dog. This sentence needs consistent formatting before it goes on the website.
snake_case: the_quick_brown_fox_jumps_over_the_lazy_dog_this_sentence_needs_consistent_formatting_before_it_goes_on_the_website
camelCase: theQuickBrownFoxJumpsOverTheLazyDogThisSentenceNeedsConsistentFormattingBeforeItGoesOnTheWebsite

Watch what each style does to the ALL-CAPS second sentence: Title Case rebuilds it word by word, Sentence case calms it into ordinary prose, and the two code styles strip out its spaces and punctuation completely.

Features

• Eleven cases in one dropdown — display styles for readers and identifier styles for code, side by side.
• Live preview: switch styles and the result changes instantly on your real text, so you choose by looking, not guessing.
• Title Case that starts from lowercase first — the reliable rescue for text pasted from ALL-CAPS sources.
• Sentence case that finds every sentence start, not just the first, and capitalises it.
• Identifier modes that extract the words from a messy phrase and rebuild them as clean camelCase, PascalCase, snake_case or kebab-case.
• Full Unicode case mapping and whole-document conversion in a click — and your text never leaves your browser.