Case Converter Overview
This case converter rewrites your text in a different style of capitalisation and, at the same time, counts what you have written. Paste a paragraph, press one of the style buttons and the result appears in the converted-text box, ready to copy or save. The character, word, sentence, paragraph and line counts, along with estimated reading and speaking time, update as you type.
It is built for the small, repetitive jobs that waste time when done by hand: a headline typed with caps lock on, a list of names in mixed case, a title that needs a consistent style, or a phrase that has to become a variable name. Everything is processed in your browser, so the text you paste is not uploaded.
What Is a Text Case Converter?
A text case converter is a tool that changes the capital and small letters in a piece of text according to a fixed rule. “Case” comes from the old printing trade, where capital letters were kept in the upper drawer of a type case and small letters in the lower one, which is why we still say upper case and lower case.
Different situations call for different rules. Sentence case capitalises only the start of each sentence and is common in body text. Title Case capitalises most words and is used for headings. Programmers rely on camelCase, snake_case and similar styles, which remove spaces and use capitals or symbols to mark where one word ends and the next begins. A converter applies the chosen rule to every character consistently, which is the one thing people find difficult to do by eye.
Case Converter Features
These are the options available in the tool above:
- Thirteen conversions. UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, aLtErNaTiNg cAsE, Invert case, Remove extra spaces and Remove line breaks.
- Clearly defined Title Case. Every word starts with a capital and the rest is lowercased, except short English joining words such as “a”, “the”, “and”, “of” and “to”, which stay lowercase unless they begin a line or sentence or end the text.
- Clearly defined Sentence case. The text is lowercased, then the first letter of the text, of each line and of each sentence (after a full stop, question mark, exclamation mark or ellipsis) is capitalised.
- Line breaks preserved. Conversions work line by line where it matters, so a list stays a list. Developer cases such as snake_case convert each line separately.
- Live statistics. Characters with and without spaces, words, sentences, paragraphs, lines, reading time (200 words a minute) and speaking time (130 words a minute).
- Sample text and Clear. Load a short example to see what each button does, or empty both boxes in one click.
- Copy and download. Copy the result with one button, save it as a .txt file, or click inside the output box, which selects all of its text for you.
- Works with many alphabets. Letters are handled as Unicode, so accented Latin, Greek and Cyrillic text converts correctly.
Benefits of Using a Case Converter
- No retyping. If caps lock was on, or a pasted block arrived in the wrong style, one click repairs it.
- Consistent headings and labels. Applying the same rule to every title makes a page, spreadsheet or slide deck look deliberate.
- Cleaner data and code. Turning “user first name” into userFirstName or user_first_name avoids typos in field names, file names and URLs.
- Counts while you work. Seeing words and reading time next to your text helps with word limits, captions and speaking notes.
- Private and unlimited. The conversion runs on your device, with no account and no cap on how much text you process.
Who Can Use a Case Converter?
- Writers and editors who need headlines in a consistent style or want to fix capitalisation in a pasted draft.
- Students tidying references, titles and notes before handing work in.
- Developers converting labels into variable, class, constant and file names.
- Marketers and social media managers preparing headings, hashtags and captions, and checking length.
- Office and data workers cleaning up lists of names, product titles and spreadsheet columns.
How to Convert Text
- Add your text. Type or paste it into the large box at the top. Press Sample text if you only want to try the tool.
- Choose a style. Press one of the buttons under “Convert to”. The converted text appears below straight away, and the button you chose stays highlighted.
- Keep editing if you like. While a style is selected, changes to the original text are converted again automatically.
- Check the result. Read it through once. Conversion is mechanical, so names, acronyms and brand spellings may need a manual touch.
- Copy or save it. Press Copy text, or Download .txt to keep a file. Clear empties both boxes when you are done.
Frequently Asked Questions
Is my text uploaded or stored anywhere?
No. The conversion and the counts are done by JavaScript running in your own browser. The text is not sent to this website or to any other service, and it disappears when you close or refresh the page.
What is the difference between Title Case and Sentence case?
Title Case capitalises the main words of a heading, for example “The Story of a Quiet Garden”. Sentence case capitalises only the first word and the start of each sentence, for example “The story of a quiet garden”. Style guides differ on the details, so this tool follows the simple rules described in the features list above.
Why did Title Case change NASA into Nasa?
The converter lowercases each word before capitalising it, so it cannot know which words are acronyms or brand names. Sentence case behaves the same way and does not detect proper nouns or the pronoun “I”. Read the result and restore any acronyms or names by hand.
Which case styles can I convert to?
You can convert to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, aLtErNaTiNg cAsE and Invert case. Two clean-up buttons also remove extra spaces and remove line breaks.
Does the converter keep my line breaks?
Yes for the capitalisation styles, which leave your line breaks and paragraph spacing where they are. Remove line breaks is the exception, because joining lines into one is exactly what it is for. The developer cases convert each line on its own.
Can it handle accented letters and other alphabets?
Yes. Text is processed as Unicode, so letters such as é, ñ, ö, Greek and Cyrillic convert properly. The small-word list used by Title Case is English, though, and language-specific rules such as the Turkish dotted and dotless “i” are not applied.
How do I copy or save the converted text?
Press Copy text to place the result on your clipboard, or Download .txt to save it as a file. You can also click inside the converted-text box, which selects everything so you can copy it with your keyboard.
Conclusion
Capitalisation is a small detail that readers notice. A case converter lets you set it once, correctly, and move on. Paste, choose a style, check the result and copy it, all without your text leaving your device.