Quick Case Converter
Free online case converter & text tools
Quick Case Converter
Free online case converter & text tools
Quick Case Converter is a free, fast, and powerful online text tool used daily by writers, developers, students, content creators, SEO specialists, managers, and professionals worldwide. Every tool you need to work with text — in one place. No download, no signup, no cost, on any device.
Convert any text between the four most commonly used writing formats instantly.
Converts every letter to capitals. Perfect for headings and acronyms. Example: "hello world" → "HELLO WORLD"
Converts all letters to small. Used for email addresses and CSS. Example: "Hello World" → "hello world"
Capitalizes the first letter of every word. Standard for titles and headlines. Example: "the quick fox" → "The Quick Fox"
Capitalizes only the first letter of each sentence. Example: "hello world." → "Hello world."
Clean up messy, copied or pasted text in one click.
Removes double spaces and trailing spaces, leaving clean single-spaced text.
Joins all lines into one paragraph. Great for text copied from PDFs.
Deletes all blank lines, leaving only lines with content.
Removes repeated lines, keeping only unique entries. Essential for cleaning lists and data.
Convert variable names and text to any programming naming convention.
Standard in JavaScript, Java, Swift. Example: "my variable name" → "myVariableName"
Used in C#, Java classes, React. Example: "my class name" → "MyClassName"
Standard in Python, Ruby, SQL. Example: "my variable" → "my_variable"
Used for constants and environment variables. Example: "max retries" → "MAX_RETRIES"
Standard for URLs and CSS. Example: "my page title" → "my-page-title"
Compare any two versions of text side by side with real-time diff highlighting. Supports 8 compare modes: Online Text Compare, Online SQL Compare, Online JSON Compare, Online XML Compare, Online HTML Compare, Online CSS Compare, Online JavaScript Compare, Online Excel Compare, and Online PDF Compare. Differences are highlighted instantly as you type — no button needed.
Find any word or phrase and replace it across your entire text instantly. Input and output appear side by side — copy or download the result when done.
A free browser-based notepad that auto-saves your notes locally. Your notes survive page refreshes and tab closes. Download anytime as a .txt file. No account needed.
Use =UPPER(A1)
Use =LOWER(A1)
Use =PROPER(A1)
Quick Case Converter is a free, instant online tool to convert any text to UPPERCASE, lowercase, Title Case, Sentence Case, camelCase, PascalCase, snake_case, CONSTANT_CASE, and kebab-case. No sign-up, no download, no cost — just paste your text and click. Works on desktop, tablet, and mobile.
A case converter is an online tool that changes the capitalization format of text with a single click. Whether you need to convert text to all caps for a heading, switch to lowercase for a web address, or format variable names in camelCase for JavaScript code, a case converter does the job instantly — no typing required.
Writers use case converters to fix capitalization errors. Developers use them to quickly switch between naming conventions. SEO specialists and content creators use them to format titles correctly. Students use them to clean up pasted text.
Beyond case conversion, Quick Case Converter includes a full suite of text tools — all free, all in one place:
Compare any two versions of text side by side with instant real-time diff highlighting.
Remove extra spaces, delete line breaks, eliminate empty lines, and strip out duplicate lines in a single click.
Get instant statistics on any text: word count, character count, sentences, paragraphs, lines, and estimated reading and speaking time.
Find any word, phrase, or character and replace it throughout your text all at once.
A free browser-based notepad that automatically saves your notes to your local browser storage.