A paragraph with mixed case
- Input
hELLO WORLD. hOW ARE YOU?
- Expected result
Hello world. How are you?
Press Sentence case. Review names and acronyms: they are not recognised automatically.
01 / PASTE AND TRANSFORM ONLY IN YOUR BROWSER
0 characters · 0 words
02 / Try an example
Try a complete task
Load an example, apply the named operation and compare the result. Changes stay in this tab. If you have already written text, we ask before replacing it.
Keep accented characters
- Input
Àéç ñ Árbol
- Expected result
ÀÉÇ Ñ ÁRBOL
Press UPPERCASE. Accented letters keep their accents.
Word initials, not editorial title style
- Input
the journey of anna
- Expected result
The Journey Of Anna
Press Capitalize Each Word. Articles and prepositions change too; review the title against your editorial style.
This free online tool changes the case of any text with one click. Turn everything into UPPERCASE, into lowercase, capitalize the first letter of every word, or put a capital letter at the start of each sentence. There is nothing to install and no account to create: paste your text, pick the format and copy the result.
The usual jobs: an email typed with Caps Lock on, a list of names exported from a database in ALL CAPS, a headline that needs Title Case. Accented letters (á, é, ü), the ñ and the Spanish opening marks (¿ ¡ «) are kept in every conversion, so it also works for text in Spanish, Catalan, French or Portuguese.
The four formats, with one example
The quickest way to see what each button does is to run the same sentence through all four. We start from text typed any which way: “yesterday it RAINED in madrid. today the sun is out.”
| Button | Result |
|---|---|
| UPPERCASE | YESTERDAY IT RAINED IN MADRID. TODAY THE SUN IS OUT. |
| lowercase | yesterday it rained in madrid. today the sun is out. |
| Capitalize Each Word | Yesterday It Rained In Madrid. Today The Sun Is Out. |
| Sentence case | Yesterday it rained in madrid. Today the sun is out. |
One honest detail: “Sentence case” first turns the whole text into lowercase and then raises the first letter of every sentence. Proper nouns (“madrid” above) stay lowercase, because no automatic tool can know for sure which words are names. That last read-through is still yours.
Three steps and done
- 1Paste your text into the box: a title, a whole email or a list. There is no length limit.
- 2Press the format you need. You can chain conversions: each button works on the text as it is at that moment.
- 3Copy the result with the “Copy text” button and paste it wherever you need it. The character and word counter updates after every change.
Where it saves the most time
- Text typed with Caps Lock on. A whole document in CAPITALS is fixed in two clicks: “lowercase” and then “Sentence case”.
- Names exported from a database. Management systems often dump names in capitals; “Capitalize Each Word” makes the full list presentable in one pass.
- Title Case headlines. For English titles or product labels, word-by-word capitalization is applied to a whole list at once.
- Voice dictation and transcripts. Dictation often arrives without capitals at the start of sentences; “Sentence case” restores them after every period, question mark or exclamation mark.
Built to keep accents and special characters
The conversions respect letters with diacritics: á becomes Á, é becomes É, ü becomes Ü and ñ becomes Ñ. It sounds obvious, but many converters built only for plain English drop accents or leave them unconverted. This one is made in Spain and tested with Spanish, Catalan and English text.
Word and Google Docs have a similar function, but you have to open the program and work on a file. Here you copy text from anywhere (an email, a CMS, a spreadsheet), convert it and put it back. All processing happens in your browser: the text is not sent to any server or stored anywhere, so you can use it with confidential content.
What an automatic conversion cannot know
The converter applies mechanical rules. It does not understand the text, so some results need a quick check:
| Input | Button | Result | What to check |
|---|---|---|---|
| HELLO, I AM ANA. I LIVE IN MADRID. | Sentence case | Hello, i am ana. I live in madrid. | The pronoun “I” and proper nouns end up in lowercase |
| THE UN AND NATO | Capitalize Each Word | The Un And Nato | Acronyms lose their capitals |
| i bought bread, milk, etc. and left. | Sentence case | I bought bread, milk, etc. And left. | The period in an abbreviation is read as the end of a sentence |
| jean-luc o'brien | Capitalize Each Word | Jean-luc O'brien | No capital after a hyphen or an apostrophe |
“Capitalize Each Word” capitalizes every word, including “the”, “and” and “of”. Style guides for English titles keep those small words in lowercase, so check short titles by hand.
Frequently asked questions
How do I change text to uppercase?
Copy your text and paste it into the box above. Then click UPPERCASE. Every letter is converted to its capital form at once, including accented letters such as Á, É, Í, Ó, Ú and Ñ.
How do I convert text to lowercase?
Paste the text and press lowercase. The whole text becomes lowercase in one click. It is especially useful for text typed in capitals or with Caps Lock on by mistake.
What does capitalizing a text mean?
Capitalizing means writing the first letter of each word in capitals: “hello world” becomes “Hello World”. It is handy for titles and names. For ordinary sentences, “Sentence case” is usually what you want.
When should I use Sentence case?
When a text has lost its capitals, for example after dictation or after converting everything to lowercase. It puts a capital at the start of the text and after every period, question mark, exclamation mark or line break.
Does it work with characters like ñ and accents?
Yes. Accented letters, ñ and ü are converted correctly, and opening marks such as ¿, ¡ or « do not stop the next word from getting its capital.
Can I apply more than one conversion to the same text?
Yes. Every button works on the text currently in the box, so you can, for example, press “lowercase” first and then “Sentence case”.
What is the difference between Capitalize Each Word and Sentence case?
“Capitalize Each Word” raises the first letter of every word (Title Case). “Sentence case” only raises the first letter of each sentence, which is what normal prose needs.
Is there a limit to the text I can convert?
No fixed limit. The conversion runs in your browser, so the practical limit is your device’s memory, which is far above any normal document.
Does it work on mobile?
Yes. The page adapts to the phone screen and works the same as on a computer.
Do I need an internet connection?
You need it to load the page. Once it is open, the conversion needs no connection, because your text never leaves your device.