Case Converter

Enter your text: Type or paste text into the input area.

Choose a conversion style: Select one of the available formats, such as uppercase, sentence case, camelCase, or snake_case.

Review the result: Check the converted text in the output area. Use the live preview or select Convert, depending on the available mode.

Copy your result: Use the copy option to place the converted text on your clipboard.

Download the text: Download the result as a TXT file if you want to save it.

You can change the input or select another format to create a different version.

Change the capitalization and format of your text with this free online Case Converter. Convert text to uppercase, lowercase, title case, sentence case, and programming-friendly naming styles such as camelCase, PascalCase, snake_case, and kebab-case.

Enter or paste your text, choose a conversion style, and review the result as you type or after selecting Convert. You can copy the converted text or download it as a TXT file.

The Case Converter supports 12 formats for everyday writing, text editing, and naming identifiers in code.

Text and prose formats

Programming and naming conventions

These formats are commonly used for variable names, function names, constants, and other identifiers.

Title case and sentence case both use uppercase letters, but they follow different patterns.

Title case capitalizes the first letter of each detected word. It is commonly used for headings, titles, and labels.

Example: a guide to working with text becomes A Guide To Working With Text.

Sentence case capitalizes the beginning of a sentence while keeping the remaining words in lowercase, apart from letters that are already uppercase according to the conversion rules.

Example: a guide to working with text. another example. becomes A guide to working with text. Another example.

Title case is useful for headings, while sentence case is generally more suitable for paragraphs and ordinary writing.

Different programming languages and projects use different naming styles. The right format depends on the conventions used in your codebase.

camelCase: Often used for JavaScript variables and functions, such as customerName.

PascalCase: Common for class names and components, such as CustomerProfile.

snake_case: Used in Python variables and functions, such as customer_name.

kebab-case: Common in CSS class names and URL slugs, such as customer-profile.

CONSTANT_CASE: Often used for constants, such as MAX_RETRY_COUNT.

dot.case: Useful for dot-separated labels or keys, such as customer.profile.name.

These are common conventions, not strict rules for every programming language.

The converter handles prose formats and naming conventions differently.

For uppercase, lowercase, title case, sentence case, alternating case, and inverse case, punctuation and spacing are preserved as part of the text.

For programming and naming formats, the converter detects word tokens and joins them using the selected convention. Punctuation and separators may therefore be removed or replaced.

For example, converting Customer profile - account settings to snake_case produces:

customer_profile_account_settings

Word detection can vary with punctuation, numbers, Unicode characters, and language-specific spelling. Review the result before using it as a variable, function, class, or other identifier.