Convert Text to Lowercase
Convert uppercase, capital letters, or mixed-case text to lowercase instantly.
This tool runs entirely in your browser. Your files are never uploaded to a server.
Convert text to lowercase online
Paste or type text to change every supported capital letter to lowercase instantly. Spaces, punctuation, numbers, and line breaks remain in place, making it easy to clean up a word, paragraph, list, or block of accidental CAPS LOCK text.
How to use the lowercase converter
Enter your text in the box and the lowercase result appears immediately below it. Copy the result when ready, or switch the same input to uppercase, Title Case, Capitalized Case, Sentence case, alternating case, or inverse case using the mode buttons.
Uppercase to lowercase example
"THIS IS SOME TEXT" becomes "this is some text". Accented capital letters work too: "CAFÉ DÉJÀ VU" becomes "café déjà vu", while digits and punctuation stay unchanged.
When lowercase text is useful
Lowercase conversion can fix accidental Caps Lock, normalize imported data, prepare URLs or slugs, standardize usernames and tags, or match a lowercase writing style. It changes letter case only and does not remove spaces, punctuation, or accents.
How the conversion works
The tool uses JavaScript's Unicode-aware String.prototype.toLowerCase() method locally in your browser. It handles accented Latin letters, Greek, Cyrillic, and many other scripts, but uses default Unicode rules rather than a selected language locale.
Limits and the Turkish dotted İ
The Turkish capital İ becomes an "i" plus a separate combining dot under default mapping, so "İSTANBUL" may produce "i̇stanbul" rather than the eight-character Turkish form. Lowercasing also discards the original capitalization pattern, so the exact source case cannot be restored afterward.
Privacy
Conversion happens entirely in your browser. Your text is not uploaded, stored, or sent to a server.
Frequently Asked Questions
- How do I convert uppercase text to lowercase?
- Paste or type the capitalized text into the box. It changes to lowercase immediately, and you can copy the result with one click.
- Can I change all caps to lowercase online?
- Yes. The converter changes every supported uppercase letter to lowercase while preserving spaces, line breaks, numbers, punctuation, and accents.
- Does this handle accented letters and other languages?
- Yes — it uses JavaScript's Unicode-aware toLowerCase(), so accented Latin letters (CAFÉ → café), Cyrillic, Greek and many other scripts convert correctly.
- Why does İSTANBUL become i̇stanbul with an odd extra mark?
- The Turkish capital İ (dotted I) has no plain lowercase equivalent in JavaScript's default mapping, so it becomes "i" plus a separate combining dot character — nine characters instead of the eight in "istanbul". This is a known limitation, sometimes called the "Turkish I problem."
- Can I turn the lowercase text back into the original?
- No — lowercasing discards information about which letters were originally capitalized. Keep a copy of your original text if you need it later.
- What other case styles can I switch to?
- UPPERCASE, Title Case, Capitalized Case, Sentence case, aLtErNaTiNg cAsE, and iNVERSE cASE are all available from the buttons above the text box, using the same input.
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