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Case Converter

Fix text typed in the wrong case. Convert to UPPERCASE, lowercase, Title Case or Sentence case and copy the result.

Runs in your browser — files never leave your device

Free · No sign-upOutputs Plain text
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How to use Case Converter

  1. Paste the text with the wrong casing.

  2. Click UPPERCASE, lowercase, Title Case or Sentence case.

  3. Review the output box.

  4. Click Copy result.

About this tool

Retyping a paragraph because caps lock was on is wasted effort. Paste the text, click a case, and copy the result. Title Case capitalizes each word's first letter; Sentence case capitalizes the first letter after each sentence-ending punctuation mark and lowercases the rest. Conversions are instant and reversible — your original stays in the input box.

This comes up constantly in everyday writing — fixing an email typed entirely in caps lock by mistake, converting a heading to proper Title Case for a document, or normalizing a list of names that was pasted in from a source with inconsistent capitalization.

Common ways people use this

  • Fixing an email or message accidentally typed with caps lock left on
  • Converting a heading or title to consistent Title Case for a document or presentation
  • Normalizing a list of names or entries that arrived with inconsistent capitalization

Tips for better results

  • After using Title Case, manually lowercase small connector words (like "of" or "the") in the middle of a title if your specific style guide calls for it.
  • Sentence case is the quickest way to fix a paragraph typed entirely in caps lock — it recognizes sentence boundaries and capitalizes accordingly.

Frequently asked questions

Does Title Case handle small words like "and" or "the"?
This converter capitalizes every word, which is the safest general rule. Style guides differ on lowercasing short words — adjust those few by hand if your style guide requires it.
Will Sentence case fix names like "london"?
No — it only knows sentence boundaries, not proper nouns. Correct names afterwards; the Find and Replace tool can help for repeated ones.
Is there a length limit?
No practical one — conversion is instant even for very long documents, because it all happens in your browser.
Can I convert back to the original casing if I make a mistake?
Your original text stays untouched in the input box, so you can simply re-click a different case option or copy the input again — nothing is destructively overwritten.
What's the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word — appropriate for headings and titles. Sentence case only capitalizes the first letter of each sentence, the way normal prose is written.

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