Swap Text Case
Invert the case of every letter: uppercase becomes lowercase and vice versa.
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Runs entirely in your browser. Your text never leaves this device and is never stored.
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Input
Case is swapped live. Nothing is stored.
Result
No text yet.
Paste text above to swap its case.
Swap Text Case inverts the capitalisation of every letter in a passage: uppercase letters become lowercase, lowercase become uppercase, and everything else stays where it is. It is the toggle that fixes text typed with Caps Lock on, and the quickest way to see how a font or a layout behaves when the case profile flips. The change is per code point, using Unicode case mapping rather than ASCII arithmetic, so accented letters and non-Latin scripts with case pairs are handled. Digits, punctuation and symbols have no case and are left alone. The page reports how many characters actually changed, which distinguishes a real inversion from text that was already mixed. It is not title case and not sentence case; those are different transformations with their own rules. It is the tool for repairing a shouted sentence, producing a deliberately inverted style for a puzzle, and testing whether a comparison or a search is case-sensitive. Because the transformation is an involution, applying it twice returns the original, which makes it safe to try on a draft. The count is useful for mixed text: a sentence with only a few capitals reports a small number, while a fully shouted line doubles its letter count. Non-cased characters stay identical, so a comparison of lengths before and after always matches.
How to use Swap Text Case
- Paste the text to invert.
- Read the swapped output and the changed count.
- Copy the result or clear to start over.
What you get
- The text with every cased letter inverted.
- A count of characters that changed case.
- Digits, punctuation and symbols preserved exactly.
When to use Swap Text Case
- Fix a sentence typed with Caps Lock on.
- Create inverted-case text for a puzzle or a style test.
- Check whether a comparison treats case as significant.
Frequently asked questions about Swap Text Case
Does it change digits or punctuation?
No. They have no case, so they pass through unchanged.
Is this the same as title case?
No. It inverts each letter; title and sentence case are separate transformations.
How are accented letters handled?
With Unicode case mapping per code point, so É becomes é and vice versa.
Is my text uploaded?
No. Inversion runs in your browser; nothing is sent to a server or stored.
Guides that compare Swap Text Case
Tools related to Swap Text Case
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Split delimited text into a column table, or break it at every new line.
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Cut text into fixed-size chunks of characters, separated by a visible divider.
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