Case converter
Change the case of any text in one click: upper, lower, sentence, title, camelCase, snake_case, kebab-case and more. It works with accents and other alphabets and runs in your browser.
Choose a case
How to use it
- Type or paste your text into the top box, or press Try an example.
- Choose a style: UPPER CASE, lower case, Sentence case, Title Case, camelCase, snake_case and more.
- The converted text appears in the result box. Press Copy result.
- To apply a second style on top, press Use result as input and choose another.
Read the guideChange text between upper case, lower case, sentence case, title case, camelCase and snake_case. Rules for each style, Word shortcuts and fixing caps-lock text.
How to change text case: upper, lower, sentence and title caseThe styles and when to use them
UPPER CASE and lower case change every letter. Sentence case capitalises the first letter of each sentence and lowers the rest, which is the usual way to fix text typed with caps lock on. Capitalize Each Word capitalises every word. Title Case follows the common English style, keeping short words such as "of", "the" and "and" in lower case unless they are first or last. Style guides differ in the details, so check the guide for your publication.
The programming styles are for names in code and files: camelCase (helloWorld), PascalCase (HelloWorld), snake_case (hello_world), kebab-case (hello-world) and CONSTANT_CASE (HELLO_WORLD). They split your text into words at spaces, punctuation and existing case changes, so converting from one style to another works, for example myVariableName to my_variable_name. A list with one name per line is converted line by line. aLtErNaTiNg and iNVERSE are for fun and for fixing text typed upside down on the shift key.
Works with accents and other alphabets
The conversion uses your browser's Unicode rules, so accented letters, Greek, Cyrillic and other cased alphabets convert correctly, and "straße" becomes "STRASSE" in upper case. Scripts that have no upper and lower case, such as Japanese, Chinese, Hindi and Thai, are left as they are. The programming styles keep those words intact and join them with the separator.
Private and quick
Your text is converted in your browser and never uploaded. For counts and reading time use the word counter, and the guide to changing text case has more on the style rules. To strip formatting symbols from AI text, try Strip Markdown.
Frequently asked questions
How do I change text to Sentence case?
Paste the text, choose Sentence case, and copy the result. It lowers everything and then capitalises the first letter of each sentence and the word "I".
What is the difference between Title Case and Capitalize Each Word?
Capitalize Each Word makes every word start with a capital. Title Case keeps short words like "of", "the" and "and" in lower case unless they come first or last, which is the common English headline style.
Can I convert variable names between camelCase and snake_case?
Yes. The converter splits the text at spaces, punctuation and case changes, so myVariableName becomes my_variable_name or my-variable-name. A list with one name per line converts line by line.
Does it work with accents and non-Latin alphabets?
Yes. It uses Unicode case rules, so accented letters, Greek and Cyrillic convert correctly. Scripts without upper and lower case, such as Japanese and Hindi, are left unchanged.
Is my text uploaded?
No. The conversion happens in your browser, and nothing is sent to a server or stored.
Why is "I" capitalised in Sentence case?
In English the pronoun "I" is always a capital letter, so Sentence case restores it after lowering the text. Names and acronyms are lowered too, so check proper nouns afterwards.