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Case Converter Online
To use this online sentence case converter, paste your text into the box, then select the case you want. Your text will update instantly, and you can copy the result in one click.
Online Title Case Converter
Change your text formatting in seconds with this easy case converter. Switch between lowercase and UPPERCASE, apply Title Case, capitalize or uncapitalize words, and convert to MiXeD cAsE—perfect for headings, captions, and clean, consistent text.
Sentence Case Converter
Paste any text into our Sentence Case Converter, and it will format it into clean, readable sentences in seconds. It automatically:
- Capitalizes the first letter of each sentence
- Changes the rest of the text to lowercase
- Fixes “i” to “I” where needed
- Adds a capital letter after periods (.) for proper sentence structure
Note: It won’t automatically capitalize proper names (like people, cities, or brands), so you may want to review the final text before using it.
Lowercase
Need to uncapitalize text fast? The Lowercase option converts every letter to lowercase. Paste your text into the box and select Lowercase.
Example: this is lowercase.
UPPERCASE
Want bold, attention-grabbing text? UPPERCASE turns all letters into CAPITALS. Paste your text and choose UPPERCASE.
EXAMPLE: THIS IS UPPERCASE.
Capitalized Case
This format makes the first letter of each word uppercase and keeps the rest lowercase. Paste your text and select Capitalized Case.
Example: This is a capitalized case.
aLtErNaTiNg cAsE
The Alternating Case option switches letters between lower and upper across your text. Paste your text and choose Alternating Case.
Example: tHiS Is aLtErNaTiNg cAsE.
Title Case
Use Title Case for headings and titles. It capitalizes the important words while keeping small words (like and, or, an) lowercase when appropriate. Paste your text and select Title Case.
Example: This Is an Example of Title Case.
Uppercase to Lowercase Converter
Convert a text case in seconds with our online case converter. Change UPPERCASE to lowercase, lowercase to UPPERCASE, or capitalize words for cleaner titles and headings—all with a single click.
No need to learn formatting tricks in Word, Notepad, or other editors. Just paste your text into the box, choose the case you want, and the tool will instantly update your content so you can copy and use it anywhere.
How to Use the Online Case Converter
Did you accidentally write a full note in Caps Lock? No problem—you don’t need to delete anything. Our case converter fixes your text instantly and applies the correct capitalization style in seconds.
You can switch UPPERCASE to lowercase, lowercase to UPPERCASE, and convert text into formats like sentence case, title case, and more.
Quick 3-step guide
Paste your text
Copy your sentence, paragraph, or full document and paste it into the input box. Spacing stays the same, but formatting like fonts, bold/italic, and hyperlinks may not carry over.
Pick a case style
Choose the option you need, such as sentence case, UPPERCASE, lowercase, capitalized case, or tOGGLE cASE.
Copy your result.
Your updated text will appear instantly. Please copy and paste it into your document, email, or post.
Why Use a Sentence Case Converter?
A sentence case converter saves time and fixes formatting mistakes in seconds. Here are a few common reasons people use it:
- Fix Caps Lock text fast: If you typed a full message in CAPS by mistake, you can switch it to clean sentence case or lowercase without rewriting anything.
- Correct missing capitalization: Forgot to capitalize the start of sentences or important words? The tool updates your text automatically, so you don’t need to retype your document.
- Create better titles for SEO: Well-formatted titles are easier to read and can improve click-through rate (CTR). Use title cases or capitalized cases to make headings look more professional and more clickable.
Why a Case Converter Matters
Titles and headings shape the first impression of your writing, so the formatting should look clean and correct. Our case converter helps you style text for books, movies, articles, emails, and academic papers by applying the right capitalization in one click.
It supports the most common text styles, including Title Case (important words capitalized, smaller words kept lowercase when needed) and Sentence Case (proper sentence-style capitalization). If you typed something in the wrong format—like leaving Caps Lock on—there’s no need to retype your work. Just convert it, then copy and paste the result back into your document.
This tool is useful for students, office workers, writers, and anyone who edits text daily. Whether you need lowercase text, full CAPS, or a polished title format, you can fix it instantly and keep your writing consistent.
More free text and writing tools you can use
Along with case conversion, you can improve and format content using our free tools, such as
- Article Rewriter Tool – refresh and rewrite text in a natural way
- Text Reverser – reverse words or characters for fun or formatting
- Image to Text (OCR)—extract text from images quickly
- Online Text Editor – write, edit, and clean up text in your browser
- RGB to HEX Converter – convert color codes for design and web work
- Text Generator & Word Maker – create quick text ideas, styles, and word variations