Text Case Converter
Transform text into common writing and coding case styles for content editing and naming workflows.
Input Text
Converted Output
Use Cases for Case Conversion
Case conversion saves time when switching between writing, coding, and publishing workflows. Editors often need sentence case or title case, while developers need snake_case or kebab-case for constants, slugs, and file naming.
Instead of manually rewriting text, this converter gives quick transformations with consistent output. It is useful for docs cleanup, API field naming, content migration, and SEO slug preparation.
FAQ
Which text cases are supported?
This tool supports UPPERCASE, lowercase, Title Case, sentence case, snake_case, and kebab-case conversions.
Can I use this for variable and file naming?
Yes. snake_case and kebab-case are useful for code identifiers, URLs, filenames, and content slugs.
Will punctuation and numbers be preserved?
Yes. Most conversions keep punctuation and numeric characters while changing letter case and spacing.
Is this text converter private?
Yes. All conversions run locally in your browser and input is not uploaded.
How is title case generated?
Words are split by spaces, hyphens, and underscores, then each word gets an uppercase first letter and lowercase remainder.
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About This Calculator
Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, and kebab-case. Free online tool for writers, developers, and content creators with bulk processing support.
Frequently Asked Questions
Which case styles are available?
You can convert text to upper, lower, title, sentence, snake_case, and kebab-case.
Can I use this for code naming?
Yes. snake_case and kebab-case conversions are useful for code and URL naming.
Does it keep punctuation and numbers?
Yes. Most conversions preserve punctuation and numbers while changing case and separators.
What are the different text case formats and when should each be used?
Title Case capitalizes the first letter of major words — used for headings and article headlines. Sentence case capitalizes only the first word and proper nouns — standard for body text and email subjects. UPPERCASE signals urgency in UI elements like buttons and acronyms. lowercase appears in brand identities and casual communication. In programming, camelCase (firstName) is standard in JavaScript and Java for variables. PascalCase (UserProfile) is used for class names. snake_case (first_name) is standard in Python, SQL, and database columns. kebab-case (user-profile) is used in HTML attributes, CSS classes, and URL slugs. Each format serves a distinct purpose, and using the wrong case convention can cause bugs in code or readability issues in content.
How can I quickly convert text case in bulk for SEO or coding work?
For SEO, URL slugs must be kebab-case (lowercase with hyphens) — converting 'How To Calculate Gross Margin' to 'how-to-calculate-gross-margin' is essential for clean URLs. For copywriters, converting pasted content to title case saves time — but note that AP Style title case differs from Chicago Manual in how it handles prepositions. Developers frequently need case conversion between databases (snake_case) and API responses (camelCase). In Google Sheets and Excel, UPPER(), LOWER(), and PROPER() handle basic conversion. For bulk content like product catalogs with hundreds of SKU names, a converter tool processes entire CSV columns at once. Most professional editors like VS Code support case conversion via keyboard shortcuts or command palette, making one-off conversions trivial during development.