Toggle Case Converter
Swap uppercase letters to lowercase and back.
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Each letter changes case independently. Numbers, punctuation and whitespace stay in place. Unicode case mappings can change the length of the result. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Invert case
- Enter your text in the input field.
- Results update as you type.
- Review the result, then use Copy result or a download link when available.
What to expect
Swap uppercase letters to lowercase and back. Each letter changes case independently. Numbers, punctuation and whitespace stay in place. Unicode case mappings can change the length of the result.
Try a small example
Hello WORLD