Guides4 min readAugust 18, 2025
How to Convert Text Between UPPERCASE, lowercase, and Title Case
Convert text case instantly with free online tools. Change between uppercase, lowercase, title case, camelCase, snake_case and more.
When Do You Need to Change Text Case?
Text case conversion is one of the most common text processing tasks. Here are everyday situations:
- CAPS LOCK was accidentally on — convert back to sentence case
- Headlines need Title Case — proper capitalization for titles and headings
- Programming variable names — converting between camelCase, snake_case, and kebab-case
- SEO URL slugs — generating lowercase, hyphenated URLs from titles
- Data cleaning — standardizing inconsistent capitalization in spreadsheets
All Case Formats Explained
| Format | Example | Common Use |
|---|---|---|
| UPPERCASE | HELLO WORLD | Headings, emphasis |
| lowercase | hello world | URLs, CSS classes |
| Title Case | Hello World | Headlines, titles |
| Sentence case | Hello world | Normal text |
| camelCase | helloWorld | JavaScript variables |
| snake_case | hello_world | Python variables |
| kebab-case | hello-world | URL slugs, CSS |
| CONSTANT_CASE | HELLO_WORLD | Constants in code |
How to Convert Text Case Online (Free)
1. Go to our Text Case Converter
2. Paste or type your text
3. Click the format you want
4. Copy the result (or press Ctrl+Enter)
All processing is instant and private — your text never leaves your browser.
Developer-Specific Tools
- camelCase Converter — for JavaScript/TypeScript
- snake_case Converter — for Python/Ruby
- kebab-case Converter — for URL slugs
- CONSTANT_CASE — for environment variables