Case Converter
Convert text between different letter cases instantly. Transform uppercase, lowercase, title case, sentence case, and more.
Quick Tip
All conversions happen instantly in your browser. No data is sent to any server, ensuring complete privacy.
About Case Converter
What is Case Conversion?
Case conversion is the process of transforming text between different capitalization styles. This tool provides seven different case conversion options to format your text exactly how you need it for content creation, programming, or document formatting.
Available Case Styles
Sentence case
Capitalizes the first letter of each sentence. Rest of the text is lowercase.
Example: "This is a sentence. This is another sentence."
lowercase
Converts all letters to lowercase. Useful for URLs, email addresses, and usernames.
Example: "the quick brown fox jumps over the lazy dog"
UPPERCASE
Converts all letters to uppercase. Perfect for headers, acronyms, and emphasis.
Example: "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"
Title Case
Capitalizes the first letter of major words. Small words (a, an, the, etc.) remain lowercase.
Example: "The Quick Brown Fox Jumps over the Lazy Dog"
Capitalized Case
Capitalizes the first letter of every word. All other letters are lowercase.
Example: "The Quick Brown Fox Jumps Over The Lazy Dog"
aLtErNaTiNg cAsE
Alternates between lowercase and uppercase for each character. Used for stylistic effect.
Example: "tHe qUiCk bRoWn fOx jUmPs oVeR ThE LaZy dOg"
InVeRsE CaSe
Inverts the case of each letter. Uppercase becomes lowercase and vice versa.
Example: "tHE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"
Common Use Cases
- Content Writing: Format article titles, headings, and body text properly
- Email Composition: Fix accidentally typed text in wrong case
- Programming: Convert variable names and function names to proper conventions
- Social Media: Create attention-grabbing posts with various case styles
- Document Formatting: Standardize text formatting across documents
- SEO Optimization: Create properly formatted meta titles and descriptions
- Data Processing: Normalize text data for databases and spreadsheets
Benefits of Using Case Converter
⚡ Instant Results
Convert text in milliseconds with one click. No waiting, no page reloads.
🔒 Private & Secure
All processing happens locally in your browser. Your text never leaves your device.
📊 Text Statistics
View character count, word count, line count, and sentence count automatically.
💾 Easy Export
Copy converted text to clipboard with one click for immediate use.
Pro Tips
- • Use Title Case for article headlines and blog post titles
- • Use Sentence case for natural, readable content
- • Use lowercase for URLs, email addresses, and usernames
- • Use UPPERCASE sparingly for emphasis or important notices
- • Capitalized Case works well for names and proper nouns
Frequently Asked Questions
What's the difference between Title Case and Capitalized Case?
Title Case follows proper English grammar rules by keeping small words (a, an, the, of, in) lowercase unless they're the first word. Capitalized Case simply capitalizes every word regardless of grammar rules.
Can I convert text in languages other than English?
Yes! This tool works with Unicode characters and supports most languages including Spanish, French, German, and other Latin-based alphabets. Character-based languages may have limited support.
Is there a limit to how much text I can convert?
No hard limit! You can convert large amounts of text. However, extremely large texts (100,000+ characters) may take a moment to process depending on your device's performance.
Does case conversion affect numbers and punctuation?
No, case conversion only affects alphabetic characters (A-Z, a-z). Numbers (0-9), punctuation marks, and special characters remain unchanged during conversion.
Why should I use Sentence case instead of Title Case?
Use Sentence case for natural, paragraph-style content and body text. Use Title Case for headlines, article titles, and headings where every major word should be emphasized.