Text Case Converter — Free Online Tool

Convert to UPPERCASE, lowercase, Title Case & 7 more styles. · No signup · Works on mobile

Loading tool…

100% private: your data is processed in your browser. Nothing is uploaded to our servers.

How to use the text case converter

  1. 1

    Paste or type your text in the input box.

  2. 2

    Click any case button — the conversion happens instantly.

  3. 3

    Hit Copy to grab the result, or Download to save it as a .txt file.

What does this tool do?

This free text case converter transforms any text into ten case styles in one click: UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, aLtErNaTiNg case, camelCase, PascalCase, snake_case, and kebab-case. Paste your text, tap a style, and copy the result instantly.

How does the text case converter work?

Sentence case detects sentence boundaries (., !, ?) and capitalizes the first letter after each. Title Case follows the common style of capitalizing principal words while keeping short articles and prepositions (a, an, the, of, in) lowercase unless they start the title. Programming cases split on spaces and punctuation.

Frequently Asked Questions

What is the difference between Title Case and Capitalized Case?

Capitalized Case capitalizes Every Single Word. True Title Case follows editorial rules: major words are capitalized but short articles, conjunctions and prepositions (a, and, the, of, to) stay lowercase mid-title — "The Lord of the Rings", not "The Lord Of The Rings". This tool offers both.

When should I use snake_case vs camelCase vs kebab-case?

Convention by language: snake_case for Python variables and database columns, camelCase for JavaScript/Java variables, PascalCase for class names, kebab-case for URLs and CSS classes. URLs specifically should use kebab-case because search engines treat hyphens as word separators but not underscores.

Is the text case converter really free?

Yes — 100% free with no hidden charges, trial limits, or premium tiers for core features. You don't need to create an account or enter an email address. The site is supported by non-intrusive display ads, which keeps every tool free for everyone.

Is my data private when using the text case converter?

Completely. The text case converter runs entirely in your browser using JavaScript — nothing you type or upload is sent to our servers. When you close the tab, your data is gone. This makes it safe for confidential documents, financial figures, and personal information.

Does the text case converter work on mobile phones?

Yes. The text case converter is built mobile-first and works on any phone or tablet with a modern browser — iPhone (Safari), Android (Chrome), and everything in between. The layout adapts to small screens, so buttons and inputs stay easy to tap on a 375px-wide display.

Do I need to install anything to use the text case converter?

No. The text case converter works directly in your web browser — no downloads, no extensions, no signup. Just open the page, use the tool, and get your result instantly. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.