Case Converter

Easily change text between uppercase, lowercase, title case, and more.

100% Local Processing

About the Case Converter

Our Case Converter is a simple, free online utility that allows you to change the capitalization of your text. Whether you accidentally left caps lock on, or need to format a title for an article, this tool handles it instantly. Simply paste your text and click the desired format.

How to convert text case

  1. Paste or type the text you want to change into the input area.
  2. Choose the output style, such as uppercase, lowercase, sentence case, title case, or alternating case.
  3. Review the converted text and use the copy control when it is ready for another document.

Examples and worked results

Title to sentence case

Input
THE QUICK BROWN FOX
Result
The quick brown fox

Case conversion changes letters; it does not rewrite the words or correct spelling.

What the converter changes

The tool applies JavaScript string case transformations to the characters in your input. Title-case rules are useful for headings but cannot reliably determine whether a short word should stay lowercase in every publishing style.

Common use cases

  • Repairing text entered with Caps Lock enabled
  • Preparing headings, labels, and spreadsheet values
  • Normalising pasted text before further editing

Important notes and limitations

  • Capitalisation is mechanical, so proper nouns and brand names may need manual correction.
  • The tool does not translate, spell-check, or change punctuation.

Practical tips

  • Keep the original text until you have checked the result, especially for names and acronyms.

Frequently Asked Questions

Is the Case Converter free?

Yes, the case converter is free to use without an account.

Does it save my text?

No. All processing happens locally in your browser. We do not store or transmit your text.

What is Sentence case?

Sentence case capitalizes only the first letter of the first word in a sentence.