How to change text case (upper, lower, snake, camel)
To change text case, open the ToolCrix Text Case Converter, paste your text, and click the case you want — UPPER, lower, Title, Sentence, snake_case, kebab-case, camelCase, PascalCase or CONSTANT_CASE. The transformed text appears instantly, ready to copy or download. Free, no upload, no sign-up.
Need to change text case — to UPPERCASE, lowercase, Title Case, Sentence case, snake_case or camelCase? This free browser text case converter transforms your text instantly with one click. No app, no sign-up, nothing uploaded.
Why a case converter saves time
Retyping text just to fix its capitalisation is tedious — especially when you paste something in ALL CAPS or get inconsistent casing from a spreadsheet. A converter fixes it in one click.
Developers need programmer cases (snake_case, camelCase, kebab-case, CONSTANT_CASE) constantly for variables, files and keys. Doing them by hand is slow and error-prone.
How to use it (step by step)
- Open the Text Case Converter.
- Paste or type your text.
- Click the case you want (UPPER, lower, Title, Sentence, etc.).
- See the transformed text instantly.
- Copy the result or download it.
What you can use it for
- Fixing text pasted in the wrong case.
- Formatting titles and headings consistently.
- Creating snake_case or camelCase variable names.
- Generating URL-friendly kebab-case slugs.
- Cleaning up data from spreadsheets.
Case types explained
- UPPERCASE / lowercase — all caps or all small.
- Title Case — capitalises each major word.
- Sentence case — capitalises the first letter only.
- snake_case / kebab-case / camelCase / CONSTANT_CASE — for code.
Tips
- Title Case keeps small words (a, the, of) lowercase — ideal for headlines.
- Use kebab-case for clean URL slugs.
- camelCase for JS variables, snake_case for Python.
- Combine with the Word Counter to check length after converting.
Frequently Asked Questions
How do I convert text to uppercase or lowercase?
Paste your text into the ToolCrix Text Case Converter and click UPPERCASE or lowercase — it transforms instantly.
What case types are supported?
UPPER, lower, Title, Sentence, capitalized, snake_case, kebab-case, camelCase, PascalCase, CONSTANT_CASE and more.
Is the case converter free?
Yes — free, instant and private, with no sign-up.
Is my text uploaded?
No. Everything is converted locally in your browser.
Can I make a URL slug?
Yes — use kebab-case to turn a title into a clean, URL-friendly slug.
What's the difference between Title Case and Sentence case?
Title Case capitalises each major word ("How To Use ToolCrix") and is for headings. Sentence case capitalises only the first letter ("How to use toolcrix") and is for body text and tweets.
How do I convert text to a URL-friendly slug?
Use the kebab-case option in the Text Case Converter — it turns "Best Free PDF Tools" into "best-free-pdf-tools", lowercase and hyphenated, ready to drop into a URL.
Try it now: open the free Text Case Converter or the Word Counter, or browse more guides.