Case converter
Same words. A different look. Change the case of your text in a click, with your original kept safely beside it.
Make every letter uppercase.
Ready when you are.
A change of case, without the fuss.
Type or paste text into the left-hand field. Your original stays there when you change modes.
Use the four buttons to preview a different capitalization. The result updates as you type.
Take the converted result to your document or save it as a UTF-8 text file.
A few details make a difference.
Uppercase and lowercase use the language of this page. Accented letters are supported. Some Unicode conversions change length: German ß becomes SS in uppercase, and changing back cannot recover the original spelling.
Title case capitalizes each word, including short words such as “and” and “of”. It is a simple transformation, not an editorial title-style checker. Hyphenated parts are treated as separate words; apostrophes inside a word are kept.
Sentence case starts a new sentence after . ! ? or … followed by whitespace, allowing closing quotes or brackets. Abbreviations can split unexpectedly; an unpunctuated line break does not start a new sentence. Names, acronyms and German noun capitalization are not recovered automatically. Review the result before using it.
Before you hit copy.
Will this overwrite my original?
No. The original and converted result are separate. Switching modes always starts from your original, so you can compare the results. Reloading or leaving clears both fields.
Does it work with accented letters and emoji?
Yes. Spanish accents and ñ, German umlauts and other Unicode letters are supported. Emoji, punctuation, spaces and line breaks are preserved. Letter case changes can increase the number of characters.
Is title case the same as a headline style guide?
No. This tool capitalizes the first letter of every word. It does not apply language-specific editorial exceptions or identify proper nouns.
Is my text sent to a server?
No. Case conversion runs in your browser. Optional analytics records only the tool and button or mode label, never your text, conversion result or counts.
Check your text from another angle.
Count words and characters before your next draft goes out.
A practical example
Before
a SMALL example. another LINE.
After
Sentence case: A small example. Another line.
Put it to work
Use lowercase for an inconsistent list, uppercase for short labels or sentence case to tidy a pasted paragraph. Convert first, then review names, acronyms and brand spellings before reusing the text.
Check the result
Case conversion cannot identify every proper name or editorial convention. Title case follows this tool’s simple word-based rules rather than a particular publisher’s style guide. Automatic sentence boundaries may differ for abbreviations and unusual punctuation.