ToolKitText tools
Case Converter
Convert text into uppercase, title case, camelCase, snake_case and more.
Text input
63 characters · 10 words
UPPERCASE
TOOLKIT MAKES DAILY UTILITIES FAST, LOCAL, AND PLEASANT TO USE.
How to use the Case Converter
The Case Converter rewrites any text you paste into the exact format you need — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE or even alternating sPoNgE case. Choose a style from the dropdown and the converted result appears instantly in the output box, ready to copy back out with a single click. You can switch styles as many times as you like without re-pasting your text.
It is a daily helper for developers normalising variable, constant and file names, for writers fixing inconsistent capitalisation in headings, and for marketers tidying up campaign titles or columns pasted from a spreadsheet. Converting a long block between camelCase and snake_case by hand is slow and easy to get wrong, whereas the converter applies the chosen rule consistently across every line at once.
Every conversion runs entirely in your browser, so the text you paste never touches a server and nothing is logged. There is nothing to install and no account to create — open the page, transform your text, and close the tab knowing your content stayed on your device, which matters when you are working with unpublished copy or client material.
Frequently asked questions
What case formats does this tool support?
UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and alternating sPoNgE case — selectable from a single dropdown.
Does it handle camelCase and snake_case correctly?
Yes. camelCase removes spaces and lowercases the first letter; snake_case joins words with underscores in lowercase. The converter detects word boundaries so both formats come out consistent.
Is my text sent to a server?
No. All conversion happens entirely in your browser using JavaScript. Your text never leaves your device and nothing is stored.
Can I convert large blocks of text?
Yes. You can paste long passages or whole documents and convert them in one pass — the whole block is transformed instantly, with no length limit imposed by a server.