Convert text between 12 naming conventions. Copy any result with one click.
To convert case: paste your text — the tool instantly converts between UPPERCASE, lowercase, Title Case, Sentence case, and other formats with one click.
FreeToolHub Case Converter is a free browser-based tool that converts text between uppercase, lowercase, title case, and sentence case, no signup.
About this tool
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case and more. Instant, free, 100% in-browser, no signup.
What Is the Case Converter?
The Case Converter is a free browser-based text transformation tool that converts text between multiple case formats instantly: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case. Unlike online converters that require you to paste text into a server-side form, this tool processes everything locally in your browser using JavaScript — your text never leaves your device. It handles edge cases like Unicode characters, accented letters, mixed-language input, and preserves formatting when converting large documents. The tool supports batch conversion of multiple lines and can process text up to several megabytes without performance degradation.
Who Should Use This Tool?
Software developers use this tool daily when converting between naming conventions — transforming database column names from snake_case to camelCase for JavaScript code, or converting CSS class names between kebab-case and camelCase for React components. Content writers and editors use Title Case conversion to format headlines and article titles according to AP or Chicago style guidelines. Data analysts use UPPERCASE and lowercase conversion to standardize text columns before importing CSV data into spreadsheets or databases. Students use it to quickly reformat essays and assignments. Anyone working with code, documentation, or structured text benefits from instant case conversion without installing additional software.
How to Use the Case Converter
Paste or type your text into the input area — the tool displays all available case conversions simultaneously in the output panel below. Click the conversion you need (UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, or kebab-case) and the result is copied to your clipboard automatically. For multi-line text, each line is converted independently. The tool also includes a character count and word count display. Use the clear button to reset the input area for a new conversion. All processing happens in your browser — close the tab and your data is gone. No account, no usage limits, no data collection.
Frequently asked
Which text cases does it support?
UPPERCASE (all caps), lowercase, Title Case (capitalize first letter of each word), camelCase (first word lowercase, subsequent words capitalized, no spaces), PascalCase (all words capitalized, no spaces), snake_case (words separated by underscores), kebab-case (words separated by hyphens), SENTENCE CASE (first word capitalized only), and CONSTANT_CASE (uppercase with underscores). Real-time preview as you type.
Can it handle multi-line text and code snippets?
Yes. Paste any text—paragraphs, code blocks, variable names, or lists. The converter preserves line breaks and applies the selected case transformation to each line independently. This is useful for converting variable naming conventions (e.g., camelCase to snake_case) when refactoring code between languages (JavaScript to Python).
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