Case Converter
Convert text to UPPERCASE, lowercase, Title Case, and more
Select Conversion Type
Free Online Text Case Converter
Transform your text between different letter cases instantly with our free online case converter. Whether you need to convert text to UPPERCASE, lowercase, Title Case, Sentence case, or fun alternating and inverse cases, our tool makes text formatting quick and effortless.
Perfect for writers, developers, social media managers, and anyone who needs to reformat text. Fix accidentally typed caps lock text, format article titles properly, prepare text for coding, or create stylized text for creative purposes.
Simply paste your text, click the conversion you need, and copy the result. All processing happens locally in your browser with no data transmitted anywhere.
Available Case Conversions
UPPERCASE
Converts all letters to capitals. Used for emphasis, headers, and acronyms.
hello world → HELLO WORLD
lowercase
Converts all letters to small letters. Standard for URLs, email addresses, and code.
HELLO WORLD → hello world
Title Case
Capitalizes the first letter of each word. Standard for headlines and titles.
hello world → Hello World
Sentence case
Capitalizes first letter of each sentence. Standard for body text and paragraphs.
HELLO. WORLD. → Hello. World.
aLtErNaTiNg CaSe
Alternates between lower and upper case. Used for mocking tone in memes.
hello world → hElLo WoRlD
InVeRsE CaSe
Swaps the case of each letter. Uppercase becomes lowercase and vice versa.
Hello World → hELLO wORLD
Who Uses Case Converters?
Writers & Editors
Format article titles, headlines, and subheadings with proper title case capitalization.
Web Developers
Convert text to lowercase for URLs, CSS class names, and variable naming conventions.
Social Media Managers
Create attention-grabbing posts with stylized text or fix copy-pasted content.
Data Entry Specialists
Standardize text formats across spreadsheets and databases for consistency.
Students & Researchers
Format citations, references, and academic paper titles according to style guides.
Marketers
Create properly formatted ad copy, email subject lines, and marketing headlines.
Frequently Asked Questions
What is the difference between title case and sentence case?
Title case capitalizes the first letter of every word (The Quick Brown Fox). Sentence case only capitalizes the first letter of each sentence (The quick brown fox). Use title case for headlines, sentence case for body text.
How do I fix text typed with caps lock on?
If you accidentally typed in ALL CAPS, use the lowercase conversion first, then use sentence case or title case as needed to get proper capitalization back.
Does this work with non-English text?
Yes, case conversion works with any language that has uppercase and lowercase letters (Latin, Greek, Cyrillic, etc.). Languages without case (Chinese, Japanese, Arabic) will pass through unchanged.
What is alternating case used for?
Alternating case (LiKe ThIs) became popular through the "Mocking SpongeBob" meme and is used to indicate a mocking or sarcastic tone in online communication.
Can I preserve some capitalization?
The conversions apply to all text uniformly. For mixed results, you can convert to lowercase first, then manually capitalize specific words like proper nouns or acronyms.
Is my text stored or logged?
No. All text processing happens locally in your browser using JavaScript. Nothing is sent to any server or stored anywhere.