How to convert text case online
Change text to lowercase, Title Case, camelCase, CONSTANT_CASE, and other styles in your browser — without uploading.
Pick a dedicated converter
Each style has its own URL: lowercase (/tools/lowercase), UPPERCASE (/tools/uppercase), Sentence case (/tools/sentence-case), Title Case (/tools/capitalize), camelCase (/tools/camel-case), PascalCase (/tools/pascal-case), snake_case (/tools/snake-case), kebab-case (/tools/kebab-case), and CONSTANT_CASE (/tools/constant-case). Title Case keeps the shipped /tools/capitalize path.
Steps
1) Open the converter for the style you need, or open Case Converter to switch Target case on one page. 2) Paste or type text — the result updates as you type. Nothing is uploaded. 3) Copy the output, or open another dedicated converter; your input is kept while you switch pages.
When to use which style
Use lowercase and Sentence case for readable copy. Use Title Case for headlines. Use camelCase and PascalCase in JavaScript. Use snake_case in Python and databases. Use kebab-case in URLs and CSS. Use CONSTANT_CASE for env vars and constants. Slugify at /tools/slugify folds accents and can cap length — that is a CMS path, not identifier case. Find & Replace is a search, not a case transform.
Worked example
“hello world” → Hello World on /tools/capitalize (Title Case). The same words become helloWorld, HelloWorld, hello_world, hello-world, and HELLO_WORLD on the other dedicated pages. Input is shared while you hop between case-family URLs. Empty input yields empty output. Nothing is uploaded.
Privacy
Text stays in the browser. Related: /tools/slugify, /tools/find-replace, /tools/remove-extra-spaces.