Text Case Converter: UPPERCASE, lowercase, Title Case & More

Typing text in the wrong case — ALL CAPS in an email, inconsistent heading capitalisation, camelCase vs snake_case in code — is a constant friction point. The Quill Tools Text Case Converter fixes this in one click for any amount of text.

Available Case Formats

• UPPERCASE — ALL LETTERS CAPITALISED. Used for acronyms, emphasis, constant names in code.
• lowercase — all letters lowercase. Used in CSS class names, email addresses, URLs.
• Title Case — Every Major Word Capitalised. Used in headings, titles, article names.
• Sentence case — Only the first word capitalised. Standard for most prose and blog content.
• camelCase — firstWordLower, SubsequentWordsCapitalised. Used in JavaScript variables and functions.
• PascalCase — AllWordsCapitalised. Used in class names and component names across most languages.
• snake_case — words_separated_by_underscores. Used in Python variables, SQL column names, and file names.
• kebab-case — words-separated-by-hyphens. Used in CSS classes, HTML attributes, and URL slugs.
• SCREAMING_SNAKE_CASE — CONSTANT_LIKE_THIS. Used for environment variables and constants.

Developer Use Cases

Switching between naming conventions is a daily task in software development. Converting a product name from Title Case to snake_case for a database column, or to kebab-case for a URL slug, is tedious manually — especially for long lists of names. The converter handles bulk conversions instantly.

Content Creator Use Cases

Bloggers and article writers frequently need to fix capitalisation in:

• Imported text from PDFs that arrives in UPPERCASE or lowercase
• Heading consistency across a long document
• Social media posts that need specific capitalisation styles
• Book or article titles following AP, APA, MLA, or Chicago style

Title Case Rules

Proper title case has nuances. Articles (a, an, the), coordinating conjunctions (and, but, or, for, nor), and short prepositions (at, by, for, in, of, to, up) are typically lowercase unless they're the first or last word. Different style guides (AP, APA, Chicago) have slightly different rules. The Quill Tools converter implements Chicago-style title case by default.

How to Convert Text Case

1. Open Quill Tools Writing Tools.
2. Select the Case Converter mode.
3. Paste your text.
4. Click the desired case format button.
5. Copy the converted text.

Frequently Asked Questions

What case formats does the converter support?

UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and SCREAMING_SNAKE_CASE.

Does it work with Unicode and accented characters?

Yes. The converter correctly handles Unicode, so it works with accented characters in Spanish, French, German, and other languages.

Convert text case instantly at Quill Tools Writing Tools.