Convert text to UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, alternating case, or inverse case in one click. Paste your text below, select a format, and copy or download the result. Everything is processed locally in your browser – your text is never uploaded or stored.
Your text is converted locally in your browser and is never uploaded or stored.
Convert Text Case Online in One Click
A case converter is an online tool that changes the capitalization of text without requiring you to retype it. It can convert lowercase letters to uppercase, fix text accidentally typed with Caps Lock, format a heading in Title Case, capitalize sentences, or reverse the existing letter case.
Toolisto supports seven conversion modes: UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, alternating case, and inverse case. The converted text can be copied to the clipboard or downloaded as a plain .txt file.
The tool also displays live word and character counts, making it useful for articles, headings, emails, social posts, product descriptions, notes, and other written content.
How to Use the Case Converter
Converting the capitalization of your text takes only a few steps:
- Type directly into the editor or paste text from another document.
- Select the case format you want to apply.
- Review the converted result in the same text box.
- Click Copy text to copy the result to your clipboard.
- Alternatively, select Download .txt to save it as a plain-text file.
- Click Clear when you want to start again.
The word and character totals update automatically while you type or edit the text. You can also apply another case mode to the converted result without reloading the page.
Text Case Formats Explained
The following example shows how each available mode changes the same text.
Original text: how TO write a clear heading
| Conversion mode | Result |
|---|---|
| UPPERCASE | HOW TO WRITE A CLEAR HEADING |
| lowercase | how to write a clear heading |
| Title Case | How to Write a Clear Heading |
| Sentence case | How to write a clear heading |
| Capitalized Case | How To Write A Clear Heading |
| aLtErNaTiNg cAsE | hOw To WrItE a ClEaR hEaDiNg |
| InVeRsE CaSe | HOW to WRITE A CLEAR HEADING |
UPPERCASE
UPPERCASE converts every lowercase letter into a capital letter.
Example:
Please review the document.
PLEASE REVIEW THE DOCUMENT.
Uppercase is commonly used for short labels, abbreviations, warnings, spreadsheet values, and text that must follow a specific formatting requirement. Long passages written entirely in capital letters can be harder to read, so this mode is best used selectively.
lowercase
The lowercase converter changes every letter to its lowercase form.
Example:
TOOLISTO TEXT TOOLS
toolisto text tools
Use lowercase to normalize imported data, fix text entered with Caps Lock, prepare simple labels, or remove inconsistent capitalization before applying another format.
Title Case
Title Case capitalizes the first and last words and most important words while keeping common short English words such as “a,” “an,” “and,” “of,” “the,” and “to” lowercase where appropriate.
Example:
a guide to writing clear headlines
A Guide to Writing Clear Headlines
Title Case is frequently used for article titles, book titles, reports, presentations, videos, and marketing headlines.
Capitalization rules vary between APA, AP, Chicago, MLA, and individual brand style guides. Toolisto applies a practical general-purpose English rule set rather than claiming compliance with one specific editorial style. Review the result when a publication requires a particular style guide.
Sentence case
Sentence case converts the text to lowercase and capitalizes the first letter at the beginning of each sentence and after common sentence-ending punctuation.
Example:
THIS IS THE FIRST SENTENCE. HERE IS THE SECOND.
This is the first sentence. Here is the second.
Sentence case is suitable for ordinary paragraphs, interface labels, emails, descriptions, and headings that should read like normal sentences.
Automated case conversion cannot reliably identify every name, acronym, brand, or specialized term. After using Sentence case, check items such as Google, NASA, iPhone, people’s names, and place names because they may need to be capitalized manually.
Capitalized Case
Capitalized Case makes the first letter of every word uppercase and converts the remaining letters in each word to lowercase. This format is also sometimes called Proper Case, Start Case, or Capitalize Each Word.
Example:
welcome to the online text converter
Welcome To The Online Text Converter
Unlike Title Case, Capitalized Case does not intentionally leave articles, conjunctions, or prepositions lowercase. This makes it useful for names, labels, lists, spreadsheet data, and systems that require every word to begin with a capital letter.
aLtErNaTiNg cAsE
Alternating case switches between lowercase and uppercase letters throughout the text.
Example:
alternating text
aLtErNaTiNg TeXt
Spaces, punctuation, and numbers remain in place and do not interrupt the alternating letter pattern. This style is mainly used for playful writing, usernames, captions, memes, and creative text.
InVeRsE CaSe
Inverse case flips the existing case of every letter. Lowercase letters become uppercase, while uppercase letters become lowercase.
Example:
Toolisto Case Converter
tOOLISTO cASE cONVERTER
Inverse case is useful for correcting text with reversed capitalization or creating a stylized result based on the current mix of uppercase and lowercase letters.
Title Case vs. Sentence Case vs. Capitalized Case
These three formats are often confused, but they follow different rules.
Sentence case capitalizes the first word of each sentence:
How to create a clear page title
Title Case capitalizes the main words while leaving selected short words lowercase:
How to Create a Clear Page Title
Capitalized Case capitalizes every word, including short words:
How To Create A Clear Page Title
Use Sentence case for regular prose and conversational headings. Use Title Case for conventional English titles and headlines. Use Capitalized Case when every word must start with a capital letter.
When Is a Text Case Converter Useful?
Fixing Accidental Caps Lock Text
If an email, paragraph, or document was typed with Caps Lock enabled, paste it into the editor and choose lowercase or Sentence case. This is faster than retyping the entire passage.
Formatting Titles and Headings
Writers, editors, bloggers, and marketers can use Title Case or Sentence case to make headings more consistent. Always compare the result with the style guide used by your organization or publisher.
Cleaning Spreadsheet and Database Values
Names, categories, tags, product attributes, and imported records often contain inconsistent capitalization. Lowercase or Capitalized Case can provide a cleaner starting point, although names and brand terms should still be reviewed manually.
Preparing Social Media Content
Change the case of captions, profile text, hashtags, or short promotional messages without switching between multiple applications. Alternating and inverse case can also be used for informal or creative posts.
Editing Website Content
Case conversion can help format navigation labels, button text, article titles, product descriptions, form labels, metadata drafts, and other website content.
Standardizing Notes and Documents
Text copied from several sources may combine uppercase, lowercase, and irregular capitalization. Converting it to one consistent format makes the content easier to review and edit.
What Does Case Conversion Change?
The converter changes the capitalization of letters. It does not translate, summarize, rewrite, spell-check, or correct the grammar of the text.
Numbers, most punctuation marks, spaces, and line breaks remain in their original positions. The tool works with plain text, so rich formatting such as fonts, colors, bold text, tables, and hyperlinks is not included when the result is copied or downloaded as a .txt file.
Case conversion can also affect the appearance or length of a small number of language-specific characters. Review the output when exact character preservation is required.
Browser-Based and Private Text Conversion
Toolisto processes the entered text locally in your browser. The case converter does not upload the content to Toolisto’s server and does not store it.
Local processing makes the tool suitable for ordinary drafts, messages, articles, notes, and other text you prefer not to submit to a remote conversion service. You should still follow your employer’s or organization’s security policies when handling confidential, regulated, or highly sensitive information.
Frequently Asked Questions
A case converter is a tool that changes the capitalization of text. It can convert letters to uppercase or lowercase and apply formats such as Sentence case, Title Case, Capitalized Case, alternating case, and inverse case.
Yes. The case converter is free to use and does not require registration, an account, or a software download.
Paste or type your text into the editor and click UPPERCASE. Every lowercase letter will be converted to its uppercase form.
Enter the text and click lowercase. The tool will convert all letters to lowercase while keeping spaces, numbers, punctuation, and line breaks in place.
Title Case keeps selected short English words lowercase when appropriate, while Capitalized Case makes the first letter of every word uppercase. For example, Title Case produces “A Guide to Better Writing,” while Capitalized Case produces “A Guide To Better Writing.”
Proper Case is commonly used as another name for Capitalized Case, especially in spreadsheet and text-processing tools. It usually means that the first letter of every word is capitalized. The exact meaning can vary between applications.
No automatic case converter can reliably identify every proper noun, acronym, brand name, or technical term from capitalization alone. Review names and terms such as NASA, WordPress, iPhone, and New York after applying Sentence case.
It preserves plain-text elements such as paragraphs, spaces, punctuation, and line breaks. Rich formatting – including fonts, colors, bold text, images, tables, and hyperlinks – is not retained in a downloaded .txt file.
The basic uppercase, lowercase, capitalized, alternating, and inverse modes work with letters from many languages supported by modern browsers. Title Case uses an English list of short words, so its editorial rules are intended primarily for English titles.
Yes. Use Copy text to place the result on your clipboard or Download .txt to save it as a UTF-8 plain-text file.
No. The conversion runs locally in your browser. The text is not uploaded to or stored on Toolisto’s server.