Free tool
Text Case Converter
Paste your text and choose how you want it written: all uppercase, all lowercase, title case, sentence case or programming formats like camelCase and snake_case.
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Everything is processed in your browser. What you type is not sent to any server or stored.
How it works and what it does with your text
It's a small, straightforward utility: you paste, choose options and copy the result.
It runs in your browser
The text is transformed by this page's code, on your device. No sign-up or installation needed.
We don't store what you type
We don't send your text to any server or store it. You can check this in the Network tab of your browser's developer tools.
Free and unlimited
Use it as often as you like. It works the same on mobile and on desktop.
Tips to get the most out of it
For headlines, “title case” isn't perfect
The title case option capitalizes every word, including “of” or “the”. Most style guides keep short words like those in lowercase, so check them by hand, or use “sentence case” if you only want the first word and proper nouns capitalized.
If you copied a text in capitals, switch it to sentence case
First convert it to lowercase or straight to sentence case: that way you get a readable text back without rewriting it. Then check the proper nouns and acronyms.
Programming formats
camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE are used for variable, class, file and URL names. The tool separates the words by spaces, hyphens or changes in capitalization.
The ñ and accents are respected
The conversion uses the rules of the page's language, so “ñ” becomes “Ñ”, “ß” becomes “SS” and accents are kept.
Frequently asked questions
How do I change a text from uppercase to lowercase?
Paste the text in the box, choose “lowercase” from the list and copy the result. If you want each sentence to start with a capital letter, choose “Only the first letter of each sentence”.
What is camelCase and what is it for?
It's a way of writing several words together with no spaces, with the first one in lowercase and the following ones starting with a capital letter (myLongVariable). It's used in programming to name variables and functions.
Does it work with long texts?
Yes. It's processed in your browser, so the limit is set by your device's memory, not by the page. Texts of hundreds of thousands of characters are converted in an instant.
Do you store the text I paste?
No. The conversion happens on your device and the text is not sent to any server.
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