🔤 Case Converter
Convert text between 12 case formats instantly — uppercase, lowercase, camelCase, snake_case and more. Free, private, no signup.
About This Case Converter
This case converter is a free online tool that instantly transforms your text between 12 different capitalisation formats. Paste or type any text, click a format button, and the converted result appears in the output area immediately — no page reload, no software to install, and no account required.
Most online case converter tools offer only a handful of basic formats. This one covers all 12: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, alternating case, InVeRsE CaSe, and dot.case. Inverse case and dot.case are rarely available elsewhere — inverse flips the capitalisation of every individual character, while dot.case joins words with dots instead of spaces, making it the standard for configuration file keys and property paths.
A live word and character count appears below the input as you type, keeping you aware of text length as you work. Use the Export button to save your converted text as a plain .txt file — handy when converting large content blocks. With this case converter, everything runs entirely in your browser — no text is ever uploaded or stored.
How to Use This Case Converter
How Case Conversion Works Step by Step
Step 1 — Type or paste your text into the large input area at the top of the tool. The live word and character count below the input updates with every keystroke, so you can monitor text length as you type.
Step 2 — Click any of the 12 format buttons. Each click of this case converter runs the conversion instantly and displays the result in the output area below. Switch between formats by clicking different buttons — no need to paste your text again.
Step 3 — Copy your result using the Copy button, or click Export to download the output as a .txt file. The export file includes the format name, the current date, and the full converted text — useful for documenting and sharing results.
Step 4 — Click Clear to reset both the input and output and start fresh with new text.
No signup required — this tool is free to use with no limits. Your text never leaves your browser.
Who Is This Case Converter For
A case converter is useful for anyone who works with text that has specific capitalisation requirements. These groups reach for it most often.
- Developers switch variable naming conventions between projects and languages. camelCase is standard for JavaScript variables and functions; snake_case for Python; CONSTANT_CASE for environment variables; and kebab-case for CSS class names and URLs. Having a quick online case converter removes the mental overhead of doing these transformations manually across large codebases.
- Writers fix text accidentally typed with Caps Lock on. Paste the all-caps paragraph, click Sentence case, and it is recovered in seconds — far faster than retyping or manually correcting each word.
- SEO professionals format page titles consistently in Title Case and keep meta descriptions in Sentence case across large content projects and site audits.
- Students and bloggers apply consistent heading capitalisation across long documents without editing each heading by hand.
- Social media managers style post copy with alternating or inverse case for a distinctive visual effect on platforms like Instagram and X.
- Data engineers format column names and configuration keys to snake_case, dot.case, or kebab-case before loading data into databases or pipelines.
Explore all our free Text Tools for more text formatting utilities.
Frequently Asked Questions
What is a case converter?
A case converter is an online tool that transforms text between different capitalisation formats — lowercase, UPPERCASE, Title Case, camelCase, snake_case, and more. You select a format and the tool applies it to your text instantly. All processing happens in your browser with no data sent to any server.
How do I convert text case online?
Paste or type your text into the input field, then click any of the 12 format buttons. The case converter updates the output instantly. No account or download is needed — just open the tool and click the format you want.
What is the difference between camelCase and PascalCase?
camelCase starts with a lowercase letter and capitalises the first letter of each subsequent word — e.g. helloWorld. PascalCase capitalises every word including the first — e.g. HelloWorld. camelCase is standard for JavaScript variables and functions; PascalCase is used for class names and React components.
What is snake_case used for?
snake_case uses all lowercase letters separated by underscores — e.g. hello_world. It is the standard naming convention in Python for variables and functions, in PostgreSQL for column and table names, and in many configuration files and environment variable names.
Is this case converter free to use?
Yes, completely free with no limits. No account, no signup, and no data is sent to any server. All 12 case format conversions run entirely in your browser.