Text Case Converter Online
Convert any text to uppercase, lowercase, title case, sentence case, camelCase, snake_case and more. Paste, click, copy — your text never leaves your browser.
A Complete Case Changer for Writers and Developers
14 conversions
Uppercase, lowercase, title case, sentence case, alternating, inverse and developer cases.
Developer cases
camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE for variable and file names.
Smart Title Case
Keeps small words like “of” and “the” lowercase, following common headline style.
Text cleanup
Remove extra spaces and line breaks from pasted content in one click.
Undo any change
Every conversion is stored in a history so you can step back safely.
100% private
All processing happens locally in your browser. Nothing is uploaded.
How to use the Text Case Converter
- Paste your text. Type or paste the text you want to change into the box.
- Choose a case. Click UPPERCASE, lowercase, Title Case, Sentence case, camelCase or any other button.
- Copy or download. Press Copy text or download the result as a .txt file.
What is a text case converter?
A text case converter is an online tool that changes the capitalization of text automatically. Instead of retyping a heading that was written with caps lock on, you paste it in, click one button and get clean, correctly capitalized text.
Text case types explained
| Case | Example | Best for |
|---|---|---|
| UPPERCASE | HELLO WORLD | Emphasis, acronyms, warnings |
| lowercase | hello world | Normalizing text, emails, tags |
| Title Case | The Art of Writing | Headlines, blog titles, book names |
| Sentence case | Hello world. Next one. | Paragraphs, UI text, captions |
| camelCase | helloWorld | JavaScript and Java variables |
| snake_case | hello_world | Python variables, database columns |
| kebab-case | hello-world | URLs, CSS classes, file names |
Why use an online case changer?
Fixing capitalization by hand is slow and error-prone, especially for long documents. A case converter saves time for students formatting essays, bloggers writing headlines, marketers preparing ad copy and developers renaming variables. Because this tool runs entirely in your browser, you can safely convert private drafts without uploading anything.
Need to check length afterwards? Try our word counter, or save the result in the memo notepad.
Frequently Asked Questions
How do I convert uppercase to lowercase?
Paste your text into the box and click the lowercase button. The text is converted instantly and you can copy it with one click.
What is the difference between Title Case and Sentence case?
Title Case capitalizes the main words in a heading, while Sentence case capitalizes only the first letter of each sentence and proper pronoun I.
Is this text case converter free?
Yes. It is completely free, needs no account and has no usage limit.
Is my text stored or uploaded?
No. Conversion runs locally in your browser, so your text is never sent to a server.
Can I convert text to camelCase or snake_case?
Yes. Use the camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE buttons to convert phrases into developer-friendly formats.
Does it work on mobile?
Yes. The tool is fully responsive and works on phones, tablets and desktops.