Case Converter
Convert text case (upper, lower, title, sentence)
This free online case converter runs in your browser and is part of our Text Tools collection.
📝 Case Converter
Convert text between different cases
⚡
Instant In-Browser Execution
Runs locally in JavaScript without wait times or server delays.
🔒
100% Privacy & Security
Your inputs and files are never stored or logged on remote servers.
📱
Cross-Device Responsive
Fully optimized for mobile smartphones, tablets, and desktop displays.
🎉
100% Free Forever
No subscription fees, no signups, and no software installations.
How to Use the Online Case Converter
1
Input Source Text
Paste or type the text you want to transform into the input box.
2
Select Target Case Format
Click your desired conversion button: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, PascalCase, or CONSTANT_CASE.
3
Preview Converted Text
Review the formatted text instantly in the output editor.
4
Copy or Download Output
Click "Copy" to save to your clipboard or download as a text file.
Frequently Asked Questions
Common questions about using this free online case converter.
What is the difference between Title Case and Sentence case? ▾
Title Case capitalizes the first letter of major words while keeping short articles and prepositions lowercase. Sentence case capitalizes only the first letter of each sentence and proper nouns.
What are camelCase, snake_case, and kebab-case used for? ▾
These are programming naming conventions: `camelCase` is used for JavaScript variables; `snake_case` is standard in Python and database column names; and `kebab-case` is used in CSS classes and URL slugs.
Does Title Case handle small words like "and", "the", and "of" properly? ▾
Yes. The algorithm follows standard grammatical style guides (AP and Chicago Manual of Style), leaving minor prepositions, coordinating conjunctions, and articles lowercase unless they start a sentence.
Can I convert code identifiers or variables with numbers in them? ▾
Yes. The case converter properly handles alphanumeric boundaries (e.g. `user2Profile` to `USER_2_PROFILE`).
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