Writing
Case Converter
A case converter changes the capital letters in a block of text. Paste your text below and see it in twelve cases at once, from UPPER CASE and Sentence case to camelCase, snake_case and kebab-case. Copy the one you need. Everything runs in your browser.
CHARACTERS
69Every case at once
UPPER CASE
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG. IT IS A CLASSIC PANGRAM!
lower case
the quick brown fox jumps over the lazy dog. it is a classic pangram!
Sentence case
The quick brown fox jumps over the lazy dog. It is a classic pangram!
Capitalized Case
The Quick Brown Fox Jumps Over The Lazy Dog. It Is A Classic Pangram!
aLtErNaTiNg cAsE
tHe QuIcK bRoWn FoX jUmPs OvEr ThE lAzY dOg. It Is A cLaSsIc PaNgRaM!
iNVERSE cASE
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG. IT IS A CLASSIC PANGRAM!
camelCase
theQuickBrownFoxJumpsOverTheLazyDogItIsAClassicPangram
PascalCase
TheQuickBrownFoxJumpsOverTheLazyDogItIsAClassicPangram
snake_case
the_quick_brown_fox_jumps_over_the_lazy_dog_it_is_a_classic_pangram
kebab-case
the-quick-brown-fox-jumps-over-the-lazy-dog-it-is-a-classic-pangram
CONSTANT_CASE
THE_QUICK_BROWN_FOX_JUMPS_OVER_THE_LAZY_DOG_IT_IS_A_CLASSIC_PANGRAM
dot.case
the.quick.brown.fox.jumps.over.the.lazy.dog.it.is.a.classic.pangram
The cases this converter makes
| Case | Example |
|---|---|
| UPPER CASE | HELLO WORLD |
| lower case | hello world |
| Sentence case | Hello world. Next one. |
| Capitalized Case | Hello World |
| camelCase | helloWorld |
| PascalCase | HelloWorld |
| snake_case | hello_world |
| kebab-case | hello-world |
| CONSTANT_CASE | HELLO_WORLD |
| dot.case | hello.world |
How to use it
1. Paste your text
Type or paste any text. A sentence, a heading, or a variable name all work.
2. Read every case
All twelve results update as you type, so you can compare them side by side.
3. Copy the one you need
Each case has its own copy button. Nothing leaves your browser.
Common questions
What is the difference between Sentence case and Capitalized Case?
Sentence case capitalizes only the first letter of each sentence, so "the cat sat. it purred." becomes "The cat sat. It purred." Capitalized Case capitalizes the first letter of every word, so the same text becomes "The Cat Sat. It Purred." For headings that follow a style guide, use the title case converter instead.
What are camelCase, snake_case and kebab-case used for?
They are naming styles for code. camelCase and PascalCase join words with no separator and are common for variables and class names. snake_case joins words with underscores and is common in Python and database columns. kebab-case joins words with hyphens and is common in URLs and CSS class names. CONSTANT_CASE is snake_case in capitals, used for constants.
Can it convert one code style into another?
Yes. The converter splits words at spaces, punctuation and capital-letter humps, so "someVariableName" becomes "some_variable_name" in snake_case and "SOME_CONSTANT_NAME" becomes "someConstantName" in camelCase.
Does my text leave my device?
No. The conversion runs in your browser with plain JavaScript. Nothing you type is sent to a server.