Case Converter: UPPERCASE, lowercase, Title Case & camelCase

About the Case Converter

Paste any text and switch its capitalisation in one click. The case converter handles everyday writing styles (UPPERCASE, lowercase, Title Case, Sentence case) and programming styles (camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE). It also removes extra spaces and line breaks. Everything runs in your browser, so your text is never uploaded.

How to use the Case Converter

1. Paste or type your text in the Input Text box.
2. Click a case button, for example Title Case or snake_case.
3. Check the result in the Output box. Use Restore to go back to the original.
4. Click Copy to put the converted text on your clipboard.

Which case should I use?

• Title Case: headlines, book and article titles ("How to Write a Good Title").
• Sentence case: body text, UI labels and most email subject lines ("How to write a good title").
• UPPERCASE: short labels, acronyms and warnings. Avoid it for long passages because it is harder to read.
• camelCase: JavaScript and Java variables (userName).
• PascalCase: class and component names (UserProfile).
• snake_case: Python variables and database columns (user_name).
• kebab-case: URLs, CSS classes and file names (user-name).
• CONSTANT_CASE: constants and environment variables (MAX_RETRIES).

Fix text typed with Caps Lock on

If you typed a paragraph with Caps Lock on, paste it in and click Sentence case. Each sentence starts with a capital letter and the rest is lower case. Check proper nouns such as names and places afterwards, because no converter can tell them apart from ordinary words.

FAQ

How do I convert uppercase to lowercase?

Paste your text and click lowercase. Every letter becomes lower case, and the result is ready to copy.

What is the difference between Title Case and Sentence case?

Title Case capitalises the first letter of each major word, while Sentence case only capitalises the first word of each sentence.

What is camelCase?

camelCase joins words without spaces, with the first word in lower case and each following word capitalised, as in myVariableName. It is common in JavaScript and Java.

Is my text uploaded anywhere?

No. The conversion happens in your browser with JavaScript, and nothing is sent to a server.

Does it work on a phone?

Yes. The tool works in any modern mobile or desktop browser, with no app or sign-up.