Free Online Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and 37 more — instantly, in your browser.
How to change text case
Paste your text
Type or paste into the box above, or drop in a .txt file.
Pick a style
Click any conversion and the text changes in place. Undo brings back the previous version.
Copy or save it
Copy the result, download it as a .txt file, or make a share link.
Popular tools
See all tools →- Character CounterCharacters, words, lines, sentences, paragraphs, bytes.
- Password & UUID GeneratorStrong passwords, UUIDs, and random strings.
- Fancy Text Generator𝐁𝐨𝐥𝐝, 𝐼𝑡𝑎𝑙𝑖𝑐, 𝓢𝓬𝓻𝓲𝓹𝓽, 𝔉𝔯𝔞𝔨𝔱𝔲𝔯, 𝔻𝕠𝕦𝕓𝕝𝕖-𝕊𝕥𝕣𝕦𝕔𝕜 and 14 more Unicode styles.
- Find & ReplaceFind and replace text with optional regex and case-insensitive matching.
- Diff CheckerCompare two pieces of text line by line.
- Lorem Ipsum GeneratorFiller text by paragraphs, sentences, or words.
Why people use ConvertCaseHQ
Your text stays with you
Every conversion runs in your browser. Your text isn't uploaded to us or saved anywhere.
Free, with no sign-up
No account, no trial and no limit on how often you convert.
42 conversions
From UPPERCASE and Title Case to camelCase, snake_case, slugs, Base64 and URL encoding.
Works anywhere
On phones and computers, in light or dark mode, in 13 languages.
Common questions
Is my text stored or uploaded?
No. The conversions run as JavaScript in your browser, so your text isn't sent to our server or saved. Share link is the one feature that puts your text into something you send, and even then it stays out of our analytics.
What's the difference between Title Case and Sentence case?
Title Case capitalizes the main words of a title: "How to Write a Headline". Sentence case capitalizes only the first word and names: "How to write a headline". Most apps and many websites use sentence case; titles of books, films and articles often use title case.
How do I convert text to camelCase or snake_case?
Paste your text, open the Developer tab and choose camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE. Spaces, hyphens and punctuation become word breaks, and existing camelCase is split where the capitals are.
Will it mess up acronyms and brand names?
Title Case and Sentence case keep short acronyms like NASA and names with capitals inside like iPhone as you typed them. They can't tell names apart in text that's entirely in capitals, so check names afterwards.
Can I convert a whole file?
Yes, for plain text. Drop a .txt file onto the box or use the upload button, convert it, then download the result as a .txt file.
Does it work with other languages?
Yes. The site is available in 13 languages, and the conversions handle accented letters, Cyrillic, Greek and other alphabets with capital letters. Chinese, Japanese and Korean have no letter case, so case styles leave them unchanged.
From the blog
All posts →
The Future of Text Transformation: AI, Automation, and Beyond
Our opinion on where rule-based text tools fit next to AI assistants: tools for exact, private, repeatable work; AI for tone, summaries and translation.
How to Use ConvertCaseHQ: A 5-Minute Walkthrough
A tour of ConvertCaseHQ as it works today: the five tabs of conversions, undo and redo, .txt files, share links, shortcuts, the Tools page and 13 languages.
Typography Basics: Choosing the Right Case for Your Brand
How brands use uppercase, lowercase and mixed case in wordmarks, how your name will appear in other people's text, and how to set caps and small caps well.