Case Style Transformer Identifier Case Conversion Tool

About this tool

This tool extracts words from any text and instantly converts them into common case styles such as camelCase, PascalCase, snake_case, kebab-case, and Title Case. It displays every format side by side as you type and lets you copy each with a single click. You can control separators and how uppercase or lowercase letters are handled through options, and all processing happens entirely in your browser (no data is sent).

Case styles describe how identifiers or text strings are split and where uppercase or lowercase letters appear. Variants include formats that join words while lowercasing the first term such as camelCase, styles that improve readability with separators such as snake_case, and heading-oriented styles such as Title Case that capitalize each word. This tool helps you understand, convert, and compare different case styles instantly.

Input text and extraction options

Enter the text or identifiers to convert

0 words

Extraction rules Split words on whitespace and symbols Split at uppercase and lowercase boundaries Split between letters and digits Remove accent marks Keep all-uppercase words

Case conversion results

Lowercase the first word, capitalize subsequent initials, and join them. Widely used for variables and functions in languages such as JavaScript.

Capitalize the first letter of every word. Often used for identifiers that represent types, classes, or components.

Join lowercase words with underscores. Common for variables, file names, and environment variables in Python and other ecosystems.

Separate words with underscores and uppercase every letter. Used to emphasize constants or flags whose values do not change.

Join lowercase words with hyphens. Helpful for readable identifiers such as URL paths or CSS custom property names.

Capitalize each word and separate them with spaces. Useful for article or section headings intended for people to read.

How to use

Enter the text or identifiers you want to convert in "Input text and extraction options." Pasting is also supported.
Adjust how to handle symbols, uppercase boundaries, digits, accent marks, and acronyms with the checkboxes as needed.
Every case style updates as you type, so click the "Copy" button for the format you want to use.

Notes

Copied results stay in your browser clipboard history, so handle sensitive information with care.
Handling of accent marks and non-Latin characters depends on your browser's language processing. If you notice unexpected conversions, adjust the options.
All processing happens entirely in your browser, and nothing is sent over the network.