Case Converter

Case Converter

Drag a .txt file here, or just paste
Clean-up Tools
Live Statistics
Characters
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No spaces
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Words
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Sentences
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Paragraphs
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Reading time
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Speaking time
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Everything runs in your browser. Your text is never uploaded, and it is autosaved locally so a refresh will not lose it.

What is a case converter?

A case converter changes the capitalisation of your text without changing the words themselves. Instead of retyping a heading or fixing a paragraph letter by letter, you paste the text once and switch it to uppercase, lowercase, title case or sentence case in a single click.

This tool runs entirely inside your browser. There is no upload, no queue and no waiting — the result appears instantly, even for very long documents.

Why use it?

Fix caps-lock accidents

Recover a paragraph typed with caps lock on, instead of writing it again.

Format headlines properly

Apply consistent title case across blog posts, chapters and product names.

Clean up pasted content

Text copied from PDFs and emails arrives with stray spaces and broken lines.

Prepare data

Normalise names, tags and spreadsheet columns before importing them somewhere else.

The different case types

UPPERCASE

Every letter becomes a capital. Good for short labels and acronyms.

HELLO THERE

lowercase

Every letter becomes small. Useful for tags, slugs and email addresses.

hello there

Title Case

Capitalises main words and keeps short joining words small — the style used for headlines.

The Art of the Deal

Sentence case

Capitalises the first letter after each full stop, question mark or exclamation mark.

Hello there. How are you?

Capitalize Each Word

Capitalises every word without exceptions. Handy for names and lists.

The Art Of The Deal

tOGGLE cASE

Flips each letter to the opposite case.

hELLO tHERE

aLtErNaTiNg

Alternates small and capital letters through the text.

hElLo tHeRe

iNVERSE cASE

Small first letter, capitals for the rest of each word.

hELLO tHERE

RanDom CasE

Randomises capitalisation — useful for meme text and test data.

hElLO thERe

How it works

  1. Paste your text into the box, or upload a .txt file.
  2. Watch the live counters update as you type — characters, words, sentences and reading time.
  3. Click a case button. The conversion applies instantly to the whole text.
  4. Use the clean-up tools to remove extra spaces, blank lines or punctuation if you need to.
  5. Copy the result or download it as a .txt file. Undo reverses anything you change your mind about.

Benefits

  • Private by design — your text is processed locally and never sent to a server.
  • Autosave — the box keeps a copy in your browser, so a refresh does not cost you work.
  • Unlimited length — no character cap and no daily limit.
  • Works offline — once the page has loaded, conversions keep working without a connection.
  • Keyboard friendly — every action has a shortcut and a visible focus ring.

Best practices

  • Use sentence case for body copy and meta descriptions; it reads faster than title case.
  • Keep one capitalisation style across a whole site — mixed heading styles look unfinished.
  • Avoid full uppercase for long passages. Screen readers may spell out words, and readers lose the word shapes they rely on.
  • Run “Extra spaces” and “Trim lines” on anything pasted from a PDF before publishing.
  • Check proper nouns after converting to lowercase or sentence case — no tool can tell every name from an ordinary word.

Frequently asked questions

Is the case converter free?

Yes. It is free to use, with no sign-up and no usage limit.

Is my text uploaded anywhere?

No. Every conversion runs in your browser with JavaScript. The only copy saved is the autosave in your own browser storage, which the Reset button wipes.

What is the difference between Title Case and Capitalize Words?

Capitalize Words capitalises every word. Title Case follows editorial style and leaves short words such as a, an, of, the and in lowercase, unless they are the first or last word.

Can I convert a text file?

Yes. Upload a .txt file or drag it onto the text box, convert it, then download the result as a new .txt file.

Will I lose my text if I close the tab?

No. The box autosaves as you type, and the Restore button brings back your last saved text.

Does it work on mobile?

Yes. The layout stacks on phones, buttons stay finger-sized, and a floating Copy button follows you as you scroll.

What are the keyboard shortcuts?

Alt+U uppercase · Alt+L lowercase · Alt+T title case · Alt+S sentence case · Alt+C copy · Alt+D download · Ctrl+Z undo · Ctrl+Y redo.