Text Case Converter - Change Text Case Online

Free Online Text Case Converter

The Tooloogle Text Case Converter transforms any block of text between every common case style — perfect for headlines, naming conventions, code identifiers, and content cleanup. Paste, pick a style, copy the result. No size limit, no signup.

Supported Case Styles

• UPPERCASE — convert all letters to capitals (great for emphasis or constants).

• lowercase — convert all letters to small (normalise data before deduplication).

• Title Case — capitalise the first letter of each word (headlines, titles).

• Sentence case — capitalise only the first letter of each sentence (article body text).

• camelCase — first word lowercase, subsequent words capitalised, no spaces (JavaScript variables).

• PascalCase — every word capitalised, no spaces (class names in C#, Java, TypeScript).

• snake_case — words lowercase, joined by underscores (Python identifiers, database columns).

• kebab-case — words lowercase, joined by hyphens (URLs, CSS classes, file names).

• CONSTANT_CASE — words uppercase, joined by underscores (environment variables).

• dot.case — words lowercase, joined by dots (config keys, namespaces).

• aLtErNaTiNg — alternating upper and lower case, just for fun.

• InVeRsE cAsE — flip the case of every letter.

How to Use

1. Paste your text into the input area.

2. Click the case style button — the converted text appears instantly.

3. Copy the result with one click.

Common Use Cases

Developers translating between naming conventions (database columns to JavaScript variables, API field names to React props). Bloggers fixing inconsistent headline capitalisation. Marketers preparing copy for ad platforms with strict case rules. Students reformatting copy-pasted content from PDFs and slide decks.

Privacy

All conversion happens in your browser using JavaScript. Your text is never uploaded, logged, or transmitted — verify with DevTools that no network request fires when you click a case button.