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Inverse Case Converter — Free Online Tool

Last updated: January 2025

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What is Inverse Case Converter?

Inverse Case flips every letter — uppercase becomes lowercase, lowercase becomes uppercase.

When to use Inverse Case Converter?

Use inverse case to undo accidental Caps Lock, create mirror-effect text, or for fun stylistic purposes.

How to use this tool

  1. 1Paste your text
  2. 2Click 'Convert' to flip all cases
  3. 3Copy the inversed result

Examples

InputOutput
Hello WorldhELLO wORLD
THE QUICK BROWN FOXthe quick brown fox
the quick brown foxTHE QUICK BROWN FOX
MiXeD cAsEmIxEd CaSe
CamelCasecAMELcASE

Rules & Behavior

  • Every uppercase letter becomes lowercase
  • Every lowercase letter becomes uppercase
  • Non-alphabetic characters are unchanged

Related Tools

Toggle Case ConverterAlternating Case ConverterUppercase ConverterLowercase Converter

Frequently Asked Questions

What is inverse case?

Inverse case (also called toggle case) reverses the case of every letter — what was uppercase becomes lowercase and vice versa.

Is inverse case the same as toggle case?

Yes, inverse case and toggle case perform the same operation — they flip the case of every letter in the text.

How is it different from alternating case?

Alternating case applies a fixed lowercase-uppercase-lowercase pattern. Inverse case flips the existing case of each individual character.

Can I use it to fix Caps Lock text?

Yes! If you accidentally had Caps Lock on, pasting your text here and applying inverse case will fix it.

Does it affect special characters?

No, only alphabetical letters are affected. Numbers, punctuation, and spaces remain unchanged.