Case Converter.
Clean Text, Instantly.
Change text to UPPERCASE, lowercase, Title Case or Sentence case in one click. Paste your content, choose a format, and copy the result.
Enter Your Text
Type or paste text below. Select any case format to convert it.
Converted Text
Your formatted result appears here, ready to copy.
Four Ways to Format Your Text
Choose the capitalization style that fits your writing task. Each option changes letter case without intentionally removing words, spaces or punctuation.
UPPERCASE
Capitalizes every letter. Useful for short labels, headings and emphasis.
Hello World → HELLO WORLDlowercase
Converts letters to lowercase for consistent text formatting.
Hello World → hello worldTitle Case
Capitalizes detected words. Formal editorial title-case rules may differ.
hello world → Hello WorldSentence case
Capitalizes the start of sentences after converting the text to lowercase.
HELLO WORLD. HI! → Hello world. Hi!How to Use the Case Converter
Convert Text in Three Steps
- Paste or type text into the editor.
- Choose UPPERCASE, lowercase, Title Case or Sentence case.
- Review the output and select Copy Result.
When a Case Converter Is Useful
Use it to correct text typed with Caps Lock, prepare headings, standardize copied notes, clean up draft captions, or reformat short website content. The word and character counters update as you type, helping you monitor the length of your text.
Understand the Limitations
Title Case in this tool capitalizes detected words rather than following a specific editorial style guide. Sentence case converts letters to lowercase before capitalizing sentence beginnings, so proper names, brand names, abbreviations and acronyms may need manual correction.
Privacy and Accuracy
Case conversion happens in your browser using JavaScript. The tool does not require you to create an account. Always review the result before publishing, especially for multilingual text, names, technical abbreviations and titles.
Frequently Asked Questions
Is the ToolZippy Case Converter free?
Yes. You can use the converter without creating an account.
What capitalization styles are available?
UPPERCASE, lowercase, Title Case and Sentence case.
Does the converter change punctuation?
It is designed to change capitalization. Existing punctuation and spacing are retained in the output.
Will Sentence case preserve acronyms and names?
Not always. Because it lowercases the text first, proper names and acronyms may require manual correction.
Is Title Case based on AP or Chicago style?
No. This converter uses a simple word-capitalization method, not the specialized rules of a publishing style guide.
Can I use the tool on mobile?
Yes. The editor, controls and result panel adapt to smaller screens.
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Continue editing and checking your writing with other ToolZippy utilities.
ToolZippy provides this utility for general text formatting. Please review generated text before use in professional or published material.