Swap Case
Swap upper↔lower case on each character. Everything runs on your device — fast, free, and never sent to a server.
The result will appear here…
or press Ctrl+Enter
Everything runs in your browser. Your data is never sent to our servers.
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Example
Example Input
Hello World
Example Output
hELLO wORLD
How to Use
- 1Paste or type your text into the Input field.
- 2If the tool has "More settings", set them as needed.
- 3Click the button (or press Ctrl+Enter), then copy the result.
About Swap Case
Swap Case changes the letter-case style of your text. The tool detects words from various input styles (spaces, underscores, hyphens, camelCase) and recomposes them.
It is useful for naming variables, building titles, preparing slugs, or standardizing text. Everything runs in the browser with Unicode support.
FAQ
Is my text sent to a server?
No. Swap Case runs entirely in your browser — the text you enter never leaves your device.