Case Converter

How It Works

Each button applies a different capitalization rule to your text. UPPER CASE turns every letter into a capital, and lower case turns every letter into a small letter. Title Case capitalizes the first letter of every word — so “the quick brown fox” becomes “The Quick Brown Fox” — which is the style most commonly used for headings and book titles. Sentence case lowercases everything, then capitalizes only the first letter of the text and the first letter after each period, exclamation mark, or question mark, the way normal sentences are written.

The aLtErNaTiNg cAsE button alternates lowercase and uppercase letters one by one, starting with a lowercase letter, so “hello world” becomes “hElLo WoRlD”. It is mostly used for playful social media posts and memes. Numbers, punctuation, and spaces are never changed by any of these styles — only letters are affected — and your original line breaks and spacing stay exactly as they were.

This tool is handy whenever text arrives in the wrong case: fixing a paragraph typed with Caps Lock on, turning a SHOUTED heading into a normal title, formatting a list of names for a spreadsheet, or cleaning up pasted text from a PDF. Writers use Title Case for headlines, programmers use lower case for consistent file names, and students use Sentence case to fix essays typed entirely in capitals. For example, pasting “HOW TO BAKE SOURDOUGH BREAD” and clicking Title Case gives you “How To Bake Sourdough Bread” in one click — no retyping.

Frequently Asked Questions