Lowercase text
Convert text to lowercase using your page language's case rules. Greek final sigma is handled, accents stay, and Hangul, kana and digits are untouched.
Enter text to see output.
What to know
Lowercasing runs over the whole text and leaves line breaks, spacing, digits, punctuation and emoji exactly where they were. ÀÉÎ Hello WORLD becomes àéî hello world, with the accents kept and only the letter case changed.
The conversion follows the language rules of the page rather than a simple table, which shows up in a few places. A Greek word like ΟΔΟΣ ends with the final-form sigma and returns as οδος.
The capital dotted İ turns into a plain i followed by a combining dot, so one letter becomes two code points. Scripts without case, such as Hangul, kana and Chinese characters, are returned unchanged.
This is useful for normalising e-mail addresses and hashtags before comparing, for tidying all-caps headings pasted from a document, and for preparing lists for lookups. If your next step is removing duplicates, you can skip it, because remove duplicate lines already ignores case unless you tell it otherwise.
There is no title case or sentence case here, only the plain lowercase conversion. Converting back is lossy: lowercasing ΟΔΟΣ and then uppercasing it again does not always restore the original, so keep your source text when the capitals matter.
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How to use Lowercase text
- Paste the capitalised text, such as a list of e-mail addresses with mixed case, into the Text input box.
- Check the Output panel: every Latin and Greek letter is lowercase while digits and punctuation are unchanged.
- Copy the result, then paste it into your spreadsheet column to compare values without case differences.
- Press Reset before processing a different text, so the previous input does not remain.
Quick answers
Will accented capitals keep their accents?
Yes. À becomes à and É becomes é, since only the case changes and the accent stays attached to the letter.
Why does a capital İ turn into two characters?
The standard lowercase form of İ outside Turkish is a plain i plus a combining dot above, which are two code points. It looks like one letter on screen.
Does lowercase affect Korean or Chinese text?
No. Those writing systems have no letter case, so the characters are returned exactly as typed.
Can it produce title case for headings?
No, this page converts every letter to lowercase only. Capitalising the first letter of each word has to be done by hand.