Change letter case in one click
Typed a whole paragraph with Caps Lock on? Need a headline in proper Title Case? Or you're a developer converting a variable name between conventions? Instead of retyping, this tool converts text of any length instantly.
Available conversions
| Conversion | Example | Use |
|---|---|---|
| UPPER CASE | HELLO WORLD | Bold headings and warnings |
| lower case | hello world | Fixing text typed with Caps Lock |
| Title Case | Hello World | Article and book titles |
| Sentence case | Hello world. Good day | Normal paragraphs |
| camelCase | helloWorld | JavaScript and Java variables |
| PascalCase | HelloWorld | Class names |
| snake_case | hello_world | Python and databases |
| kebab-case | hello-world | URLs and CSS file names |
| CONSTANT_CASE | HELLO_WORLD | Constants in code |
Reversing text
Two reverse options are included: Reverse text flips characters (“hello” → “olleh”), handy for puzzles, playful messages and designs; Reverse word order flips the order of words on each line while keeping words intact — useful for fixing right-to-left text that appears backwards in software without RTL support.
Cleaning up spaces
“Remove extra spaces” collapses repeated spaces, trims spaces at line starts and ends, and removes runs of empty lines — perfect for text copied from PDFs or web pages.
Notes
- In Title Case, short words such as and, of and the stay lowercase unless they start the title, following common English style guides.
- Sentence case also capitalizes the standalone pronoun “I”.
- Use “Undo” to step back through your conversions.
Convert text to capital letters (uppercase)
Paste your text and choose UPPERCASE to turn every letter into a capital letter, or lowercase to do the opposite. It's the quickest fix for text typed with Caps Lock on, headings that need to be all caps, or data that must be consistent before you import it into a spreadsheet. Numbers, punctuation and Arabic letters are left unchanged, because they have no upper or lower case.
Change case in Word, Google Docs and Excel
- Microsoft Word: select the text and press Shift + F3 to cycle through lowercase, UPPERCASE and Capitalize Each Word.
- Google Docs: select the text, then go to Format › Text › Capitalization.
- Excel and Google Sheets: use
=UPPER(A1),=LOWER(A1)or=PROPER(A1)in a new column.
For anything these shortcuts don't cover, such as Sentence case, camelCase, snake_case, kebab-case or reversing text, use the converter above.
Frequently Asked Questions
How do I fix text typed in all caps?
Paste it and click “Sentence case” — the first word of each sentence is capitalized and the rest becomes lowercase.
What is the difference between Title Case and Sentence case?
Title Case capitalizes most words (Hello World); Sentence case capitalizes only the first word of each sentence (Hello world).
Which case should I use for URLs?
kebab-case (words-separated-by-hyphens) is the most readable and SEO-friendly format for URLs.
Can I undo a conversion?
Yes. “Undo” restores the text from before the last conversion and can be repeated.
Is my text stored?
No. Everything happens in your browser.
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