Case Converter

Convert text between uppercase, lowercase, title case and sentence case.

A paragraph typed with caps lock on, a headline pasted in all lowercase, a variable name that should be camelCase - fixing letter case by hand is exactly the kind of chore a computer should handle. Eleven case styles are available here, from UPPERCASE and Title Case to snake_case and kebab-case for code.

Available Case Options

UPPERCASE - Every letter becomes a capital. Good for short headings and labels, but hard to read in long blocks.
lowercase - Every letter becomes small. Useful for cleaning up text that was typed with caps lock on.
Title Case - Capitalizes the first letter of each word. Standard format for book titles and article headlines.
Sentence case - Only capitalizes the first letter of each sentence. This is how most everyday writing looks.
aLtErNaTiNg CaSe - Alternates upper and lowercase letters. Useful for memes, jokes and informal social posts.
camelCase / PascalCase - Removes spaces and capitalizes word boundaries. Developers use these for variable names in JavaScript, Python and other languages.
snake_case / kebab-case - Replaces spaces with underscores or hyphens. Common in URLs, file names and database fields.

When to Use Each Case

Title case works best for article headlines, book titles and product names. Sentence case feels more natural and is great for blog subheadings. If you're a developer, camelCase and snake_case save time compared to manually reformatting variable names. For long paragraphs, avoid all caps unless the style is intentional. It slows readers down and can feel like shouting.

Common Pitfalls

Basic case converters can mess up proper nouns. For example, converting "I visited Google in India" to lowercase gives "i visited google in india." This tool keeps things simple - it converts everything you give it. If you need smart capitalization that preserves proper nouns, double-check the output before using it.

How to Use

Paste or type your text into the editor above.
Click the case conversion button you need (uppercase, lowercase, title case, etc.).
Your text converts instantly - no waiting.
Copy the result with the copy button.

Frequently Asked Questions

What is the difference between title case and sentence case?

Title case capitalizes the first letter of every major word, like "The Quick Brown Fox." Sentence case only capitalizes the first word of each sentence, like "The quick brown fox." Title case is for headlines. Sentence case is for regular writing.

Does this tool handle proper nouns correctly?

The tool applies case rules uniformly to all text. It won't automatically detect proper nouns like "Google" or "Paris." After converting, you may need to fix specific proper nouns manually.

Can I convert text to camelCase or snake_case?

camelCase, PascalCase, snake_case and kebab-case are all built in - the formats developers actually use for variable names and identifiers.

Does it work with non-English characters?

Accented letters and other Unicode characters convert fine. Still worth reviewing names and place names after a case change.

Is my text safe when I use this tool?

Everything runs in your browser. Your text is never sent to a server or stored anywhere. You can safely paste sensitive content without worrying about privacy.