Case Converter

Convert text between cases

Retyping text to change its capitalization is tedious. Paste your text, click a style, and copy the result. It's useful for fixing accidental caps-lock, formatting headings, and converting names into the casing programmers need.

The styles

• UPPERCASE / lowercase — every letter up or down.
• Title Case — Capitalize Each Word (headings).
• Sentence case — Capitalize the first letter of each sentence.
• camelCase — joinWordsLikeThis (JavaScript variables).
• snake_case — words_joined_by_underscores (Python, databases).
• kebab-case — words-joined-by-hyphens (URLs, CSS classes).
• CONSTANT_CASE — UPPER_SNAKE for constants and env vars.

FAQ

Why doesn't Title Case lowercase small words like "the"?

This tool capitalizes the first letter of every word for predictability. Strict editorial title case (which keeps articles and short prepositions lowercase) has style-guide-specific rules, so we keep it simple and consistent.

Is the case converter free to use?

Yes, it's completely free with no sign-up and no limit on how much text you can convert.

Is my text private?

Yes. Your text is converted entirely in your browser and is never uploaded to a server or saved anywhere, so it's safe to paste sensitive content.

What's the difference between camelCase, PascalCase, and snake_case?

camelCase starts lowercase and capitalizes each following word (myVariable), PascalCase capitalizes the first word too (MyVariable), and snake_case joins lowercase words with underscores (my_variable). Each convention belongs to different languages and contexts, like JavaScript variables, class names, and Python respectively.

Will it convert text with numbers, symbols, or emoji?

Yes. Letters are recased while numbers, punctuation, and emoji pass through unchanged. For the programmer styles, spaces and separators are handled so word boundaries are detected correctly.

Does it work on mobile?

Yes. You can paste, convert, and copy text on a phone or tablet just as easily as on a desktop.