Case Converter: How to Switch Between Title Case, UPPERCASE, lowercase, and Sentence Case

Whether you are writing a blog headline, formatting a spreadsheet, cleaning up imported data, or preparing content for publication, getting the right text case matters. Manually retyping text to change its case is tedious and error-prone. Our free Case Converter lets you switch between all common text case formats instantly.

Text Case Formats Explained

Case Type	Example	When to Use
UPPERCASE	THIS IS AN EXAMPLE	Acronyms, warnings, headings, emphasis in limited contexts
lowercase	this is an example	URLs, email addresses, casual writing, code
Title Case	This Is an Example	Blog post titles, article headlines, book titles
Sentence case	This is an example.	Normal prose, paragraphs, body text
camelCase	thisIsAnExample	JavaScript variable names, programming identifiers
PascalCase	ThisIsAnExample	Class names in programming, branding
snake_case	this_is_an_example	Python variable names, file naming, database fields
kebab-case	this-is-an-example	URL slugs, CSS class names, HTML attributes

Common Use Cases for Case Conversion

• Blog and SEO titles: Convert draft headlines to Title Case for better readability and click-through rates
• Data cleaning: Standardize imported CSV or database records that have inconsistent capitalization
• URL slug generation: Convert article titles to kebab-case for clean, SEO-friendly URLs
• Code formatting: Switch between camelCase and snake_case depending on your project coding standards
• Social media posts: Apply Sentence case or Title Case for professional-looking updates
• Form submissions: Normalize user-entered text (names, addresses) to proper case

Title Case Capitalization Rules

Title case can be tricky because different style guides have different rules. The general convention (AP style) is:

• Always capitalize: The first and last word of the title
• Always capitalize: All nouns, pronouns, verbs, adjectives, and adverbs
• Do not capitalize: Articles (a, an, the) — unless they are the first or last word
• Do not capitalize: Prepositions of three or fewer letters (in, on, at, for, by, to) — unless they are the first or last word
• Do not capitalize: Coordinating conjunctions (and, but, or, nor, for, yet, so)

Quick Tips for Consistent Case Usage

• Use Sentence case for body paragraphs, blog descriptions, and meta descriptions
• Use Title Case for H1 and H2 headings, blog post titles, and email subject lines
• Use UPPERCASE sparingly — text in all caps is harder to read and can feel like shouting
• Use kebab-case for all URL slugs to maintain consistency and avoid encoding issues
• For programming projects, pick one naming convention and stick with it across the codebase

Use the Case Converter to instantly transform any text into the format you need — no manual retyping required.