Case Converter: UPPERCASE, lowercase, Capitalize, camelCase and More
A case converter switches text between UPPERCASE, lowercase, Title Case, and more. It's a small tool with a surprisingly large impact on writing consistency.
When Case Matters
Programming identifiers, file names, and database fields are case-sensitive. Converting to the right style—camelCase, snake_case, or kebab-case—prevents bugs and naming errors.
Writing and Titles
Headlines and document titles often need Title Case for a polished look. Paste your draft and convert the headings in one click instead of retyping.
Shouting and Emphasis
ALL CAPS reads as shouting in messages. Use sentence case or title case for normal communication and reserve uppercase for acronyms and labels.
Batch Cleanup
Paste a list of names, email addresses, or product labels and convert them all at once. Consistent case makes data easier to search and compare.
Programming Naming Conventions
Different languages and teams prefer different identifier styles: camelCase for JavaScript and Java, snake_case for Python and Ruby, kebab-case for URLs and file names, and PascalCase for class names.
Convert a batch of field names to the target convention before writing code, and keep a style guide so the whole codebase stays consistent.
How to Convert Case
- Paste or type the text into the input box.
- Choose the target style—uppercase, lowercase, title case, or a code style like camelCase.
- Copy the converted result and verify a few words match what you intended.
For bulk edits, paste the whole list at once and convert everything in a single pass to keep formatting consistent.
Quick tip: choose your naming convention before writing code, not after. Converting a hundred field names retroactively invites typos—decide camelCase or snake_case upfront and stay consistent across the whole project. A consistent convention saves hours of cleanup later and keeps every developer on the same page.