Private text case converter

Case Converter

Switch one original text between writing and programming case styles without pasting it again.

Your text stays in your browser. Processing happens locally and nothing is uploaded.

Convert writing and code identifiers

Uppercase, lowercase, title case, and sentence case are useful for prose and headings. camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case help prepare identifiers, filenames, configuration keys, and URL-like values.

How words are detected

Programming styles split at spaces, punctuation, underscores, hyphens, and practical lowercase-to-uppercase boundaries. Each source line is converted independently so multiline input keeps its line structure.

Frequently Asked Questions

No. The original stays in the input area while the selected transformation appears in a separate output.

The converter detects common lowercase-to-uppercase boundaries such as helloWorld before rebuilding the identifier.

Yes. Unicode letters and numbers are preserved when they form tokens.

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