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Case Converter

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This free case converter changes the letter case of your text instantly. Paste or type your text, pick a style, and copy the result — no signup, nothing uploaded, no waiting. It's a complete text case converter that handles everyday cases like UPPERCASE, lowercase, Title Case and Sentence case, plus developer-friendly formats.

Beyond the basics, it works as an alternating case converter, a camel case converter online, a snake case converter online and a kebab case converter — useful for variable names, slugs, file names and tags. Need case converter title case for a heading, or a sentence case converter online to fix text that was typed in all caps? Switch styles and copy in seconds. Everything runs in your browser, so your text stays private.

How to use it

  1. 1Type or paste your text into the box
  2. 2Pick a case — UPPERCASE, lowercase, Title Case, Sentence case, alternating, camelCase, snake_case or kebab-case
  3. 3Copy the converted text or download it as a .txt

Key features

  • Free case converter — no signup, no watermark
  • All the common cases plus camelCase, snake_case and kebab-case
  • Alternating case converter and Sentence case in one click
  • Instant results — your text converts as you choose a style
  • 100% private — your text never leaves your browser
  • Works on desktop and mobile

What it does

  • Converts text to UPPERCASE and lowercase
  • Applies Title Case and Sentence case
  • Works as an alternating case converter (aLtErNaTiNg)
  • Outputs camelCase, snake_case and kebab-case
  • Copies the result with one click

What you get

  • Your text in the exact case you choose
  • Common cases plus camelCase, snake_case and kebab-case
  • A clean, copy-ready result every time
  • A free online case converter that runs entirely in your browser

Common use cases

  • Fix text typed in all caps with a sentence case converter online
  • Make headings consistent with case converter title case
  • Create slugs and tags with a kebab case converter
  • Format variable names with a camel case converter online or snake case converter online

Who it's for

  • Writers and students cleaning up UPPERCASE or lowercase text
  • Developers needing camelCase, snake_case or kebab-case
  • Marketers formatting titles, slugs and social text

Before and after

BeforeRETYPING TEXT TO FIX THE CASE BY HAND IS SLOW AND ANNOYING.
AfterA case converter changes it to any style — Title Case, Sentence case or snake_case — in one click.

Good to know

Why people trust it

How to convert text case online

A case converter saves you from retyping text just to change how the letters are capitalised. Paste a sentence that's stuck in ALL CAPS, choose Sentence case, and it's fixed instantly. Switch to Title Case for a heading, lowercase for tidy body text, or UPPERCASE when you need emphasis. This online case converter does all of it in your browser, with no signup and nothing to install.

It also covers the formats developers reach for. As a camel case converter online it turns 'user profile name' into 'userProfileName'; as a snake case converter online it gives you 'user_profile_name'; and as a kebab case converter it produces 'user-profile-name' for URL slugs and CSS classes. These are handy for variable names, file names, tags and clean URLs — and you get them from the same text case converter, no extra tool needed.

Want something more playful? The alternating case converter turns your text into 'aLtErNaTiNg' style, flipping the case letter by letter — popular for memes and stylised captions. There's also a Toggle Case option that inverts whatever case each letter is already in. Pick a style and the result appears straight away, ready to copy.

To use it, type or paste your text, choose a case — UPPERCASE, lowercase, case converter title case, a sentence case converter online, alternating, camelCase, snake_case or kebab-case — and copy the result. Everything runs locally in your browser, so your text never leaves your device. It's a fast, free and private way to change text case online, whether you're cleaning up a paragraph or formatting code.

Also known as: text case converter, online case converter, change text case, upper lower case converter, letter case converter.
FAQ

Frequently asked questions

What is a case converter?

A case converter changes the letter case of your text — for example turning ALL CAPS into Sentence case, or words into Title Case. This free online case converter also supports alternating case, camelCase, snake_case and kebab-case.

How do I convert text to Title Case?

Paste your text, then choose Title Case. The case converter title case option capitalises the first letter of every word and lowercases the rest, so your heading looks consistent.

Is there a sentence case converter online here?

Yes. Choose Sentence case and the tool lowercases your text, then capitalises the first letter of each sentence — perfect for fixing text that was typed in all caps.

Can it do alternating case?

Yes. The alternating case converter rewrites your text in 'aLtErNaTiNg' style, flipping between lowercase and uppercase letter by letter. There's also a Toggle Case option that inverts the existing case.

Does it support camelCase, snake_case and kebab-case?

Yes. It works as a camel case converter online, a snake case converter online and a kebab case converter, so you can format variable names, file names, tags and URL slugs in one click.

Is the case converter free and private?

Yes. It's a completely free case converter with no signup, and it runs entirely in your browser, so your text never leaves your device or gets shared with anyone.

Do I need to install anything?

No. This online case converter runs in any modern browser on desktop and mobile — there's nothing to download or install.

🔒 Processed privately on the server 🗑️ Files deleted automatically 🚫 Never shared with third parties