Case Converter
Transform text between different cases with beautiful, instant conversion
Ready to Convert Text
Enter your text above to see instant conversions to uppercase, lowercase, title case, camelCase, snake_case, and more!
What is a Case Converter?
A case converter is an online tool that changes the capitalisation of text—for example from UPPERCASE to lowercase, or to Title Case, Sentence case, or formats like camelCase and snake_case. It is useful for editing documents, formatting code, fixing pasted text, and keeping naming consistent.
Our case converter runs in your browser and updates the text instantly as you type or paste. No data is sent to our servers, so your content stays private. It supports multiple output formats so you can pick the one that fits your needs.
How It Works
You paste or type text into the input area, then choose a target case (or cycle through options). The tool applies simple rules to each character or word:
- UPPERCASE: Every letter becomes a capital letter.
- lowercase: Every letter becomes a small letter.
- Title Case: The first letter of each major word is capitalised.
- Sentence case: Only the first letter of the first word (and proper nouns, if the tool supports it) is capitalised.
- camelCase / snake_case: Often used in programming to turn phrases into variable or file names.
The result is shown in real time. You can copy the output with one click for use in documents, code, or forms.
Understanding the Output
There are no "scores"—the tool returns converted text. What you see is your original text with capitalisation (and sometimes spacing/separators) changed according to the chosen format. Numbers and symbols are typically left unchanged unless the format (e.g. snake_case) replaces spaces with underscores.
Benefits of Using Our Case Converter
- Instant: No page reload; conversion happens as you type or paste.
- Privacy-first: Text is processed only in your browser; we never see or store it.
- Multiple formats: One tool for documents, code, and social media.
- Free and unlimited: No sign-up or character limit.
- Works on all devices: Use on desktop, tablet, or phone.
Improvement Tips
- For code: use camelCase for variables and snake_case for file names or constants, depending on your language's style guide.
- For titles: choose Title Case for headings and Sentence case for body text to keep documents consistent.
- If you have pasted ALL CAPS text, convert to Sentence case or Title Case for better readability.
- Combine with our username generator for consistent handles, or use the password generator for secure passwords (never paste real passwords into other tools).
Frequently Asked Questions
Is the case converter free?
Yes. The tool is free to use with no registration or limits.
Do you save or read my text?
No. All conversion happens in your browser. We don't collect, store, or transmit your input or output.
Can I convert long documents?
Yes. The tool can handle long text. For very large documents, consider pasting in sections if your device is slow.
What is camelCase vs snake_case?
camelCase runs words together and capitalises each word except the first (e.g. myVariableName). snake_case uses underscores between words (e.g. my_variable_name). Both are common in programming.