Is the Case Converter free?

Yes — the Case Converter is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The Case Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the Case Converter work offline?

Yes. Once the page has finished loading, the Case Converter works without an internet connection.

Which browsers does the Case Converter work in?

The Case Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (helloWorld), while PascalCase starts with an uppercase letter (HelloWorld). Both are used in programming — camelCase for variables, PascalCase for class names.

What is CONSTANT_CASE used for?

CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is the convention for named constants in many languages — e.g. MAX_RETRY_COUNT or API_BASE_URL.

Case Converter

Convert text to uppercase, lowercase, title case, camelCase, snake_case, and more.

Input

Output

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the Case Converter?

The free Case Converter transforms text into 10 different cases in one click: UPPER CASE, lower case, Title Case, Sentence case, aLtErNaTiNg, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE. It is the only case converter you need — all conversions are available from a single toolbar of mode buttons.

→ Convert blog post titles to Title Case for consistent formatting.
→ Transform variable names between camelCase, snake_case, and kebab-case when refactoring code.
→ Convert shouted ALL-CAPS customer input to Sentence case for readability.
→ Generate CONSTANT_CASE constants from natural-language names.
→ Create aLtErNaTiNg text for meme captions or social media banter.

How to Use the Case Converter

1 Paste or type your text into the input area.
2 Click one of the ten mode buttons in the toolbar: UPPER CASE, lower case, Title Case, Sentence case, aLtErNaTiNg, camelCase, PascalCase, snake_case, kebab-case, or CONSTANT_CASE.
3 The converted output appears instantly below.
4 Click Copy to use the result.

Key Features

🔠
10 case modes

Every common case style — prose cases, programming cases, and fun cases — in one place.
⚡
Instant conversion

Switch between any of the 10 modes with zero delay.
📋
Copy output

One-click copy button available for every mode.
🔒
Browser-only

No data leaves your device — all conversions are 100% local.

Example Usage

Example Input

hello world example string

Example Output

HELLO WORLD EXAMPLE STRING  (UPPER)
Hello World Example String  (Title)
helloWorldExampleString     (camelCase)
hello_world_example_string  (snake_case)
hello-world-example-string  (kebab-case)

Frequently Asked Questions about the Case Converter

What is the Case Converter?: The Case Converter is a free online tool that lets you convert text to uppercase, lowercase, title case, camelCase, snake_case, and more. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the Case Converter free?: Yes — the Case Converter is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The Case Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the Case Converter work offline?: Yes. Once the page has finished loading, the Case Converter works without an internet connection.
Which browsers does the Case Converter work in?: The Case Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
What is the difference between camelCase and PascalCase?: camelCase starts with a lowercase letter (helloWorld), while PascalCase starts with an uppercase letter (HelloWorld). Both are used in programming — camelCase for variables, PascalCase for class names.
What is CONSTANT_CASE used for?: CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is the convention for named constants in many languages — e.g. MAX_RETRY_COUNT or API_BASE_URL.