Case Converter
Convert text between UPPER CASE, lower case, Title Case, Sentence case and aLtErNaTiNg case in one click. Paste your text, press a button, and copy the result — nothing is uploaded.
About This Case Converter
Retyping text because it was pasted in the wrong case is slow and error-prone. This case converter changes capitalization for a whole document at once, whether it is a headline typed with caps lock on, a list in all lowercase, or a paragraph that needs proper sentence case.
Use the buttons above the output box: UPPER CASE makes every letter a capital, lower case makes every letter small, Title Case capitalizes the main words of a headline, Sentence Case capitalizes the first letter of each sentence, and aLtErNaTiNg flips between small and capital letters for a playful effect.
How to Use It
- Paste or type your text into the input box.
- Click the case you want: UPPER, lower, Title, Sentence or aLtErNaTiNg.
- Review the result in the output box.
- Click Copy Output and paste it where you need it.
Which Case Should You Use?
- UPPER CASE — acronyms, labels and short warnings. Long passages in capitals are hard to read.
- lower case — usernames, tags, URLs and code identifiers.
- Title Case — headlines, book titles and headings. This tool keeps short words such as "and", "of" and "the" lowercase unless they start or end the text.
- Sentence case — body text, UI labels and many modern headlines.
Good to know: Sentence case first converts everything to lowercase, so names, places and the word "I" will need a quick manual capital afterward. Style guides differ on exactly which words to capitalize in titles, so check yours (AP, APA, Chicago) if you are publishing formally.
Who Is This Tool For?
- Writers and editors — fix headlines and pasted text quickly.
- Students — format titles and references.
- Marketers — standardize ad copy and email subject lines.
- Developers — normalize labels and test data.
Frequently Asked Questions
📖 From the blog: Title Case vs Sentence Case: Which to Use? — a clear comparison of the two styles.
Paste your text into the input box and click UPPER CASE. The converted text appears in the output box, ready to copy.
Paste the text and click lower case. Every letter is changed to its small form while numbers and punctuation stay the same.
Title Case capitalizes the main words in a title ("How to Write a Good Headline"). Sentence case capitalizes only the first word and proper nouns ("How to write a good headline").
The converter lowercases everything first and then capitalizes the start of each sentence. Proper nouns and "I" are not detected, so re-capitalize them after converting.
Yes. The conversion runs in your browser with JavaScript. Your text is never uploaded or stored.
Yes — the Sentence Case Converter page focuses on sentence case and includes extra options.
Related Tools
About This Tool
Text copied from PDFs, emails and websites often arrives full of double spaces, tabs and random blank lines. This free tool cleans it instantly. It collapses repeated spaces into one, trims stray spaces from the start and end of every line, converts tabs to spaces, and removes stacks of empty lines — while keeping your real paragraphs intact.
How to Use It
- Paste your messy text into the input box.
- Choose the cleaning options you need (all are on by default).
- Your clean text appears instantly in the result box — the counter shows how many characters were removed.
- Click Copy Result and use your clean text anywhere.
Who Needs This?
- Writers & editors — clean drafts copied from Word or Google Docs.
- Data entry workers — fix lists and records before importing them.
- Developers — tidy pasted text, logs and content files.
- Students — clean copied research notes and references.
Frequently Asked Questions
No. Normal single spaces between words are always kept. The tool only removes extra, repeated or misplaced whitespace.
Yes. With 'Remove extra blank lines' enabled, three or more line breaks become one clean paragraph break.
Yes. The tool runs in your browser and handles long documents instantly.
No. All cleaning happens on your device with JavaScript. Nothing is uploaded or stored.
Yes — use the toolbox at the top of this page: paste your text and press Remove Line Breaks. Every line break is replaced with a space, joining everything into a single line of text, which is handy for forms, spreadsheets and code. If the joined text ends up with double spaces, the main tool on this page cleans those too.
Yes. The toolbox at the top of this page has a Find & Replace tab — type the word or phrase you want to find, type its replacement, and every match in your text is swapped at once. It is the quickest way to fix a repeated name, date or term across a whole document, free and with no download.