Case Converter — free online tool
Developers paste API keys and variable names to flip between camelCase and snake_case; marketers convert headlines to title case before scheduling posts. All transformations stay in your browser tab.
When to use Case Converter
Reach for it when renaming variables between languages, fixing ALL-CAPS email subjects, or turning a product name list into title case for a landing page without opening a spreadsheet.
Useful when you want a quick answer without pasting sensitive data into random chat bots.
What Case Converter does not do
It does not translate languages, fix spelling, or apply AP/Chicago title-case exceptions for small words. It rewrites the whole string with simple casing rules.
How to use Case Converter
- Paste the phrase you want to transform into the Case Converter input.
- Click UPPERCASE, lowercase, Title Case, camelCase, or snake_case—each button rewrites the whole string.
- Review the output in the same field or the result line below the buttons.
- Copy the converted text and paste it into your code editor, CMS, or spreadsheet.
Practical tips
- Use snake_case for database columns and camelCase for JavaScript variables to match common style guides.
- Title Case here capitalises every major word; AP and Chicago styles differ on small words like "and" or "of".
- Paste once, convert, then copy—chaining conversions (camel → snake → camel) can lose original word breaks.
Example
Paste user_id and click camelCase to get userId for a JavaScript DTO field.
Related tools on Webtoolshop
- Slug Generator — URL slugs instead of code-case conversions.
- Word Counter — Count words after you fix casing in a headline.
Limitations
Applies one rule to the whole string. Mixed code+prose may need a second pass. Output lives only in this tab.
Privacy & data
We do not run a database on this static site. Text and generated output exist only in your tab until you close or refresh the page.
Frequently asked questions about Case Converter
What does the Case Converter not do?
It does not translate languages, fix spelling, or apply AP/Chicago title-case exceptions for small words. It rewrites the whole string with simple casing rules.
Give me a concrete example for the Case Converter.
Paste user_id and click camelCase to get userId for a JavaScript DTO field.
Why did the Case Converter fail or look wrong?
Try a smaller file, fewer pasted characters, or an updated browser. Extensions that block scripts or downloads sometimes interfere—test in a private window if results never appear.
Does Webtoolshop store text I paste into the Case Converter?
We do not run a database on this static site. Text and generated output exist only in your tab until you close or refresh the page.
Case Converter
Transform text casing in one click.