Uppercase to Lowercase Converter

Paste your text into the box at the top of this page, then click the "lowercase" button. Every capital letter becomes a small letter instantly. The conversion happens in your browser as you click, with no button to press and no page reload.

Paste your text and click "lowercase". Every capital letter turns into a small letter instantly. This also works for ALL CAPS text, or a paragraph typed with Caps Lock on.

In Microsoft Word, select the text and press Shift+F3 to cycle between UPPERCASE, lowercase and Capitalize Each Word. In Google Docs, use Format, then Text, then Capitalization, then lowercase. Anywhere else, paste your text into this converter.

Paste your text, then click the "UPPERCASE" button. Every letter becomes capital. This is useful for warnings, acronyms, and anything that needs to stand out in a document.

Excel does not have a built-in "change case" menu, but you can use the formula =LOWER(A1) in a spare column, then copy the result and paste it back as values. Alternatively, paste your Excel cell contents into this page, click lowercase, and paste the result back into Excel.

Select your text and use the menu Format, then Text, then Lowercase in most Mac apps. Or paste into this page and click lowercase. The browser tool works even in apps that do not have their own case menu, like some code editors and web forms.

Windows does not have a system-wide case menu. In Microsoft Word, press Shift+F3 to cycle through UPPERCASE, lowercase and Title Case. In other apps, paste into this page, click lowercase, and paste back.

Title Case capitalises the first letter of most words: "The Quick Brown Fox Jumps." Sentence case capitalises only the first letter of each sentence: "The quick brown fox jumps." Use Title Case for headings and Sentence case for normal writing.

camelCase joins words and capitalises every word except the first: "helloWorldExample". The name comes from the humped capital letters that look like a camel. It is the standard naming style for variables in JavaScript, Java and Swift.

PascalCase capitalises the first letter of every word and joins them without separators: "HelloWorldExample". It is the standard naming style for class names in most languages, for React components, and for types in C# and TypeScript.

snake_case joins words with underscores and keeps everything lowercase: "hello_world_example". It is the standard naming style in Python, Ruby and SQL. The name comes from the underscore characters that look like a snake crawling on the ground.

kebab-case joins words with hyphens and keeps everything lowercase: "hello-world-example". The name comes from the hyphens that look like a skewer going through a kebab. It is the standard for URLs, CSS class names and file names.

CONSTANT_CASE is snake_case with every letter capitalised: "HELLO_WORLD_EXAMPLE". It is used for values that do not change, like environment variables and constants. In JavaScript it is written const MAX_RETRIES = 5;.

Alternating case, sometimes called SpongeBob case or studly caps, alternates between lowercase and uppercase: "hElLo WoRlD". It is almost always used for the meme format. No serious text uses it.

Inverse case swaps the case of every letter. All capitals become lowercase and all lowercase becomes capitals. Useful when you typed text with the wrong Shift key held down: "hELLO" becomes "Hello".

No. The conversion happens entirely in your browser using JavaScript. Your text is never sent to a server, never logged, and never stored anywhere. You can verify this by opening your browser network tab while using the tool.

No. There is no fixed limit. You can paste a single word or an entire novel. The practical limit is your device memory, which for text is essentially unlimited on any modern device.

Yes. Every case mode is free to use with no sign-up, no watermark and no daily limit. ToolDeck may show ads to pay for hosting, but they never lock a feature.