About this tool
Change text case for copy cleanup, variable naming, code formatting, and UI writing with five punctuation-preserving modes and five normalized identifier modes.
Text Case Converter is useful when copy needs to move between sentence case, title case, uppercase, lowercase, or other style formats without manual rewriting. It saves time in editorial work, UI copy cleanup, spreadsheet prep, and documentation formatting.
- Supports UPPER, lower, Title Case, Sentence case, alternating case, camelCase, PascalCase, kebab-case, snake_case, and CONSTANT_CASE.
- Writing modes retain spacing and punctuation, while identifier modes apply Unicode NFKC normalization, split lower-to-upper and acronym boundaries, remove punctuation, and join words.
- Uses browser sentence segmentation when available so punctuation inside values such as 2.0 is not treated as a sentence boundary.
- Starts empty, accepts up to 1,000,000 characters, keeps source text out of the URL, and exports the converted result as UTF-8 TXT.
How to use Text Case Converter
Paste the source text, switch between the case modes, and review the transformed output before copying it into the target document or field. If the content includes acronyms or brand names, spot-check the result so automatic casing does not flatten intentional capitalization.
When this tool is useful
- Supports UPPER, lower, Title Case, Sentence case, alternating case, camelCase, PascalCase, kebab-case, snake_case, and CONSTANT_CASE.
- Writing modes retain spacing and punctuation, while identifier modes apply Unicode NFKC normalization, split lower-to-upper and acronym boundaries, remove punctuation, and join words.
- Uses browser sentence segmentation when available so punctuation inside values such as 2.0 is not treated as a sentence boundary.
- Starts empty, accepts up to 1,000,000 characters, keeps source text out of the URL, and exports the converted result as UTF-8 TXT.
Examples you can test
Load an example, compare the result with the expected output, then replace it with your own input.
Turn a heading into title case
Example input
how to audit internal links before a site migration
Expected output
How To Audit Internal Links Before A Site Migration
Title case is useful for drafts, headings, and quick cleanup, but brand-specific style rules should still be reviewed manually.
Create a developer-friendly key
Example input
Search Console Anomaly Detector
Expected output
searchConsoleAnomalyDetector or search-console-anomaly-detector
Camel case and kebab case help turn readable labels into variable names, route slugs, or config keys.
Validation checklist
- Check acronyms, product names, and brand spellings after conversion.
- Use sentence case for paragraph copy and title case only when the destination style guide calls for it.
- Review hyphenated words and apostrophes because automatic case conversion cannot know every editorial convention.
- Use camelCase, PascalCase, snake_case, or kebab-case only after confirming the destination format.
- Keep punctuation and spacing visible when converting copied spreadsheet or CMS text.