Case Converter
Instantly convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more — entirely in your browser.
Last reviewed by the Radiatus Cloud team
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Radiatus delivers secure cloud, DevOps & compliance engineering.
One box, every case a project might ask for
Different systems expect different capitalisation, and getting it wrong is a small but constant friction: a database column wants snake_case, a JavaScript variable wants camelCase, a URL slug wants kebab-case, a heading wants Title Case, and a constant wants CONSTANT_CASE. This converter takes whatever you paste and produces all of them, so you copy the one you need instead of retyping and hoping the boundaries land in the right places.
The hard part is detecting word boundaries
Converting case is only easy once you know where the words are, and that is the part naive converters get wrong. "getHTTPResponse" is three words, not two, and "user_id" and "user-id" and "user id" all mean the same three-letter split. The converter reads runs of capitals, digits and separators to find the real boundaries first, then re-joins them in the target style, which is why an acronym in the middle of a name survives the trip.
Everything stays in your browser
The text you paste is converted in the page with JavaScript and never sent anywhere, so pasting a variable name from private code, a customer list or an internal document carries no disclosure risk. There is no length limit beyond what your browser can hold in memory, and the result updates as you type.
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Frequently Asked Questions
Which cases are supported?
UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. Each is produced from the same detected word boundaries so they stay consistent with one another.
How does it handle acronyms like HTTP or ID?
It treats a run of capitals as a word, so getHTTPResponse splits into get, HTTP and Response. That keeps acronyms intact rather than mangling them into Http or breaking them mid-word.
What is the difference between Title Case and Sentence case?
Title Case capitalises the first letter of every word; Sentence case capitalises only the first letter of the whole text and leaves the rest lowercase, the way an ordinary sentence reads.
Does it change my original text or send it anywhere?
Neither. The conversion runs entirely in your browser and produces a separate result you copy; your input is never uploaded.
Can I convert a whole list at once?
Yes. Paste multiple lines and each is converted in place, so a column of names or identifiers is transformed together rather than one at a time.
Privacy & Security
All processing happens locally in your browser — your text is never uploaded.
How to Use
Type or paste text, then click a case button to transform it. Click Copy to copy the result.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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