Text Case Inverter
Flip the case of every letter in your text. Fix accidental caps lock mistakes instantly.
Text to invert
Paste text to swap uppercase and lowercase characters.
Processing happens locally in your browser; nothing is uploaded.
Inverted case outputEach letter swapped to the opposite case.
Typical inputs process in under 1ms on modern browsers.
How to invert case
Invert in 3 steps
Takes ~5 seconds- 1Paste text
Add your text in the input box.
- 2Invert case
Click "Invert case" to swap letter casing.
- 3Copy output
Copy the inverted result for reuse.
Who should use this tool?
- Writers fixing formatting
- Developers cleaning text
- Support teams editing replies
Examples
Inverts every letter case.
Works on mixed casing.
Keeps numbers and symbols unchanged.
Invert casing without manual edits
Swap uppercase and lowercase letters instantly.
Use this text case inverter to swap uppercase and lowercase letters in any text. Paste your content, invert the case instantly, and copy the result. Everything runs locally in your browser for fast, private formatting.
Quickly repair text typed with the wrong casing.
- Instant output
- No server upload
- Works on any text
Invert case across long documents or lists.
- Bulk paste
- Line-by-line output
- Copy or download easily
Case inversion tips
Review results for names or acronyms after swapping case.
- Use inversion to fix accidental caps lock.
- Double-check proper nouns after conversion.
- Pair with uppercase or lowercase tools if needed.
Frequently asked questions
Does this change numbers?>
Does it keep spacing?>
Is my data sent anywhere?>
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