Free Case Converter Online – Upper, Lower, Sentence & Title Case

Case Converter

Convert text between sentence case, UPPERCASE, lowercase, Title Case, and more — instantly.

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Text is converted entirely in your browser. Nothing is uploaded or stored.

Case Converter — Stop Retyping, Just Convert

Caps lock was on for an entire paragraph before anyone noticed. A heading needs Title Case but was typed in lowercase. A form field insists on Sentence case and what you pasted is in all caps. Retyping any of that from scratch is a waste of time when the actual content is already right — only the capitalization is wrong. This case converter online fixes that in one click, no retyping required.

Seven Ways to Convert Case

Two of these are the ones most people actually came here for. Sentence case capitalizes the first letter of each sentence and lowercases the rest — it's the standard fix when someone accidentally typed a whole paragraph with caps lock on. UPPER CASE does the opposite, making everything capital letters for headers or emphasis, while a lower case converter strips capitalization entirely, which comes up more than you'd expect for usernames, slugs, or just resetting a block of text to a clean baseline.

Then there's the pair that genuinely confuses people: Capitalized Case capitalizes every single word without exception, while a proper Title Case converter is more careful about it — it capitalizes the important words but correctly leaves small connector words like "a," "the," and "of" in lowercase, the way an actual book or article title would be formatted.

The last two are less practical, more for fun. aLtErNaTiNg cAsE flips between upper and lower letter by letter, usually seen in sarcastic or mocking text online. InVeRsE CaSe does something similar but based on whatever's already there — it just flips each letter's existing capitalization.

Sentence Case vs. Title Case vs. Capitalized Case

These three get confused often enough that it's worth spelling out the difference. Sentence case treats your text like normal writing — only the first letter of each sentence is capitalized, same as this paragraph. Capitalized Case capitalizes every single word, no exceptions. Title Case is the more careful version used for actual titles and headings — it capitalizes the important words but correctly leaves small words like "a," "the," and "of" in lowercase, matching standard title formatting rules.

FAQs

Is this case converter free to use? Yes, completely free with no sign-up required.

Is my text uploaded or stored anywhere? No — all conversion happens locally in your browser.

What's the difference between a case converter and a case convertor? Nothing — "convertor" is just a common alternate spelling of "converter." Both refer to the same kind of tool.

Can I convert text case on mobile? Yes, the tool is fully responsive and works the same way on any mobile browser.

Does Sentence case handle abbreviations perfectly? It handles standard sentence structure well, but like any automated tool, it won't recognize every proper noun or abbreviation — it's worth a quick scan afterward for names that should stay capitalized.

Why would I need aLtErNaTiNg or InVeRsE case? They're mostly used for stylistic or sarcastic text online — quoting something in a mocking tone, or just for visual effect in a caption or message.

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