Does it work on non-Latin scripts?

Upper/lower case only applies to Latin letters. Scripts without case, like Korean, are left unchanged.

What's the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every word, while Sentence case only capitalizes the first letter of each sentence (based on punctuation).

Is my text sent to a server?

No. Conversion happens entirely in your browser.

Does Korean text change?

Korean has no case, so only English letters change — the rest stays as-is.

Are articles/prepositions handled in Title Case?

Every word is capitalized — publication rules that keep a/the/of lowercase are not applied.

🔠 Case Converter

Convert Latin-script text's letter case in various ways.

Input

Result

How to use

Enter your text.
Click the conversion you want (UPPERCASE/lowercase/Title Case/Sentence case).
Use the copy button to grab the result.

🎯 Use Cases

Match title-casing conventions (Title Case)
Convert code constant names to uppercase
Clean up text to capitalize only the first letter of each sentence

Example

Input

hello WORLD. this is developk.

Output

UPPERCASE     : HELLO WORLD. THIS IS DEVELOPK.
lowercase     : hello world. this is developk.
Title Case    : Hello World. This Is Developk.
Sentence case : Hello world. This is developk.

The same input run through all four conversions. Title Case capitalizes the first letter of every word, whereas Sentence case only capitalizes the first letter after each period.

Results by conversion mode

Transforms English text by casing rules — each style has its own use.

Mode	Example	Common use
UPPER	HELLO WORLD	Emphasis, acronyms, warnings
lower	hello world	Emails, tags, code normalization
Title Case	Hello World	Titles and headlines
Sentence case	Hello world	Natural sentences
camelCase / snake_case	helloWorld / hello_world	Variable and file naming conventions

FAQ

Does it work on non-Latin scripts?: Upper/lower case only applies to Latin letters. Scripts without case, like Korean, are left unchanged.
What's the difference between Title Case and Sentence case?: Title Case capitalizes the first letter of every word, while Sentence case only capitalizes the first letter of each sentence (based on punctuation).
Is my text sent to a server?: No. Conversion happens entirely in your browser.
Does Korean text change?: Korean has no case, so only English letters change — the rest stays as-is.
Are articles/prepositions handled in Title Case?: Every word is capitalized — publication rules that keep a/the/of lowercase are not applied.