Best Online Case Conversion Tool | Rune | Rune Blog

Case conversion is a daily task for writers, developers, and content creators. But not all case converters are created equal. Here's why Rune's Case Converter is the best free option available.

What Makes a Great Case Converter?

Multiple Formats: Beyond just upper/lowercase.
Instant Results: No clicking required.
One-Click Copy: Quick workflow.
Developer-Friendly: Programming case formats.
Privacy: No data uploaded.
Auto-Save: Never lose your work.

How Rune Delivers

11+ Case Formats

Rune supports more formats than any other free tool:

Standard: UPPERCASE, lowercase, Sentence case, Title Case
Developer: camelCase, PascalCase, snake_case, kebab-case, dot.case
Fun: tOGGLE cASE, rAnDoM CaSe

All Conversions at Once

Type once, see every format simultaneously. No clicking through tabs or running multiple conversions.

One-Click Copy

Each conversion card has a "Copy" button. Click once and the text is on your clipboard.

Developer-First Design

Most case converters ignore programming needs. Rune includes camelCase, PascalCase, snake_case, and kebab-case—essential for developers.

Total Privacy

Your text is processed locally in your browser. Nothing is uploaded to any server.

Auto-Save

Close the tab by accident? Your text is saved in local storage and waiting when you return.

Feature Comparison

Feature	Rune	Competitor A	Competitor B
Case Formats	11+	4-5	6-7
Instant Display	✅	❌	❌
Developer Cases	✅	❌	Limited
One-Click Copy	✅	✅	✅
Auto-Save	✅	❌	❌
Ad-Free	✅	❌	❌
Privacy (Local)	✅	❌	❌

Perfect For

Writers: Format titles and headings.
Developers: Convert between programming conventions.
Students: Fix accidental caps lock.
Marketers: Ensure brand consistency.
Anyone: Quick text formatting.

Conclusion

When you need the best free case converter, Rune delivers. With 11+ formats, instant display, developer-friendly options, and complete privacy, it's the ultimate text case tool. Try Rune's Case Converter today.