Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case or tOGGLE cASE — instantly, with live counts and one-click copy.

0 characters 0 words 0 lines

How to Convert Text Case

Three steps, all in your browser.

1

Paste your text

Type or paste any text into the box. The live counters show characters, words and lines as you go, so you can keep an eye on length while you work.

2

Pick a case

Click a style — UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, tOGGLE cASE or alternating. Each button shows a tiny preview of what it does. Need to convert measurements next? Try the Unit Converter.

3

Copy the result

The converted text appears in the result box. Hit Copy to send it to your clipboard, or Clear to start over. Nothing is uploaded — it all happens on your device.

Frequently Asked Questions

What does a case converter do?
A case converter rewrites the letters in your text to a chosen capitalization style without changing the words themselves. Paste any text and pick a style: UPPERCASE makes every letter a capital, lowercase makes every letter small, Title Case capitalizes the first letter of each major word, Sentence case capitalizes only the first letter of each sentence, Capitalized Case capitalizes the first letter of every word, and tOGGLE cASE flips the case of each letter. It is useful for fixing text that arrived in the wrong case, formatting headlines and titles, normalizing data before importing it, or undoing a caps-lock accident — all in one click, with nothing uploaded.
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every significant word, which is the style used for headlines, book titles and headings — for example, "The Quick Brown Fox". This tool keeps short connecting words like a, an, the, of, and, to and in lowercase unless they start or end the title, which matches common style guides. Sentence case capitalizes only the first letter of each sentence and the word "I", leaving everything else lowercase — for example, "The quick brown fox jumps." Sentence case is the right choice for body text, descriptions and most UI copy, while Title Case is for titles and headings.
Is my text uploaded anywhere?
No. The case converter runs entirely in your browser using JavaScript. The text you paste is transformed on your own device and is never sent to a server, logged, or stored anywhere. That means you can safely convert private notes, draft emails, code, or confidential text, and the tool keeps working even if you go offline after the page has loaded. Closing or refreshing the tab clears everything.
Does it count words and characters too?
Yes. As you type or paste, the tool shows a live count of characters, words and lines for your input. The character count includes spaces and punctuation, the word count splits on whitespace, and the line count reflects how many lines your text spans. This is handy when you have a length limit to hit — a tweet, a meta description, an essay word target — and want to convert the case and check the length in the same place.
How do I copy the converted text?
After you apply a case style, the result appears in the output box. Click the Copy button to copy it to your clipboard, then paste it wherever you need it. The Clear button empties both boxes so you can start fresh. Because the result is plain text, it pastes cleanly into documents, spreadsheets, code editors, social posts and form fields without carrying over any hidden formatting.