Case Converter

Transform text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and 10+ other formats. Copy with one click!

Enter your text

UPPERCASE

HELLO WORLD

lowercase

hello world

Title Case

Hello World

Sentence case

Hello world

camelCase

helloWorld

PascalCase

HelloWorld

snake_case

hello_world

kebab-case

hello-world

CONSTANT_CASE

HELLO_WORLD

dot.case

hello.world

path/case

hello/world

aLtErNaTiNg

hElLo WoRlD

iNVERSE cASE

hELLO wORLD

What Are Text Cases?

Text cases are different ways to capitalize letters in words. Just like how we write names with capital letters ("John") but regular words in lowercase ("hello"), programmers and writers use many different styles for specific purposes.

Think of it like dress codes - you wouldn't wear a suit to the beach, and you wouldn't use SCREAMING_CONSTANTS in a friendly email!

Common Case Styles Explained

For Writing:

UPPERCASE - All capitals. Used for headings, acronyms (NASA, FBI), or EMPHASIS
lowercase - All small letters. Casual, modern aesthetic
Title Case - First Letter Of Each Word Capitalized. Used for titles, headlines
Sentence case - Only first letter capitalized. Standard for most text

For Programming:

camelCase - First word lowercase, rest capitalized. Used in JavaScript, Java variables
PascalCase - Every word capitalized, no spaces. Used for class names
snake_case - Words separated by underscores. Used in Python, databases
kebab-case - Words separated by hyphens. Used in URLs, CSS classes
CONSTANT_CASE - All caps with underscores. Used for constants

When to Use Each Style

Case Style	Best For	Example
camelCase	JavaScript variables	`userName`, `isLoggedIn`
PascalCase	Class names, React components	`UserProfile`, `ShoppingCart`
snake_case	Python, databases, file names	`user_name`, `created_at`
kebab-case	URLs, CSS, HTML attributes	`user-profile`, `nav-menu`
CONSTANT_CASE	Constants, env variables	`MAX_SIZE`, `API_KEY`

Why Naming Conventions Matter

In programming, using the wrong case isn't just a style issue - it can break your code!

// JavaScript is case-sensitive
let userName = "Alice";
console.log(username); // Error! "username" is not defined

Most programming languages and frameworks have strict conventions:

Python: snake_case for variables, PascalCase for classes
JavaScript: camelCase for variables, PascalCase for components
CSS: kebab-case for class names
SQL: snake_case for columns, UPPERCASE for keywords

Pro Tips

Be consistent - Pick one style per context and stick with it
Follow team/language conventions - Don't be the rebel using camelCase in Python
Use descriptive names - userEmailAddress beats uea any day
Avoid mixing styles - user_Name is a crime against readability

You May Also Like

What Are Text Cases?

Common Case Styles Explained

When to Use Each Style

Why Naming Conventions Matter

Pro Tips