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Free Online Case Converter

Easily convert text between Uppercase, Lowercase, Title Case, Sentence Case, and more.

Converted Result
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How to use Free Online Case Converter

1

Type or paste your text into the box below.

2

Click on one of the conversion buttons (e.g., UPPERCASE, lowercase).

3

Your text will instantly transform.

4

Click 'Copy' to use your converted text.

Why use this tool?

Instant Conversion

Convert large blocks of text in milliseconds.

Multiple Formats

Supports Upper, Lower, Title, Sentence, Alternating, and Inverse case.

Easy to Use

Simple one-click interface for all transformations.

Free Case Converter - Transform Text to Upper, Lower, Title Case

Instantly convert text between UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, and aLtErNaTiNg CaSe. Perfect for fixing formatting errors, standardizing content, or creating stylized text for social media, documents, and coding. No character limits, 100% free, works entirely in your browser.

Quick How-To Guide

  1. 1Paste or type your text into the input box
  2. 2Select the desired case format (UPPERCASE, lowercase, Title Case, etc.)
  3. 3Review the automatically converted text in the output area
  4. 4Click "Copy" to copy the converted text to your clipboard
  5. 5Paste the converted text wherever you need it

Why use our tool?

Six conversion modes—UPPERCASE, lowercase, Title Case, Sentence case, Capitalized, and Alternating
Real-time conversion—see results instantly as you type or paste
Unlimited text length—convert short phrases or entire documents
Preserve or modify formatting—smart algorithms handle punctuation correctly
One-click copy—copy converted text to clipboard with a single click
Privacy-first design—all processing happens locally in your browser

Frequently Asked Questions

Find answers to common questions about using our tool, its features, and how it handles your data privacy.

Title Case capitalizes the first letter of every major word (nouns, verbs, adjectives, adverbs) while leaving articles, prepositions, and conjunctions lowercase (e.g., "The Quick Brown Fox Jumps Over the Lazy Dog"). Sentence case only capitalizes the first letter of each sentence and proper nouns, just like regular writing (e.g., "The quick brown fox jumps over the lazy dog."). Use Title Case for headings and titles; use Sentence case for normal text.
Yes! If you accidentally typed with Caps Lock on, simply paste your text and convert it to lowercase or Sentence case to fix the mistake instantly. This is much faster than retyping everything. The tool intelligently handles acronyms and proper nouns when converting to Sentence case.
Yes, the case converter supports Unicode characters including accented letters (é, ñ, ü), Cyrillic, Greek, and most international alphabets. Special characters, numbers, and punctuation are preserved exactly as-is. However, some languages like Chinese, Japanese, and Korean don't have case variations, so they remain unchanged.
Alternating Case (also called "spongebob mocking text") alternates between lowercase and uppercase letters (e.g., "aLtErNaTiNg CaSe LiKe ThIs"). It's primarily used for humorous or sarcastic text in social media, memes, and informal communication. It's not suitable for professional documents or formal writing.
Absolutely! Many developers use case converters for dealing with variable naming conventions. For example, converting camelCase to snake_case, or fixing inconsistent capitalization in strings and comments. While this tool doesn't specifically handle camelCase or snake_case conversions, it's useful for standardizing text case in code comments, documentation, and database entries.
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