Text Case Converter
Instantly convert your text to UPPER CASE, lower case, Capitalized Case, and more – with just one click!
Understanding Each Case Converter
Wondering which text case to choose? Here’s a simple explanation of each case style available on ConvertCase.co, so you can easily pick the right one for your needs.
Sentence Case
Sentence case converts your text so that the first letter of the first word is capitalized, and the rest is in lowercase, like a regular sentence. It’s perfect for writing normal sentences, titles, and paragraphs that follow standard grammar rules. If you have messy text with random capitalization, Sentence Case will fix it. This format is commonly used in articles, blogs, and emails. It helps ensure that your text looks clean, professional, and easy to read. However, it does not automatically capitalize proper nouns, such as names or places.
Upper Case
Upper case transforms all letters in your text into capital letters. It is often used to emphasize a message, for example in titles, headlines, warnings, or announcements. Upper case can make text stand out but should be used sparingly to avoid overwhelming readers. This format is great for headings or to grab attention in marketing materials.
Lower Case
Lower case converts all letters to small (lowercase) letters. This is useful when you want to remove unnecessary capitalization or create casual text. It’s often used in coding, usernames, email addresses, and when following specific formatting guidelines. Lower case ensures consistency and simplicity.
Capitalized Case
Capitalized case makes the first letter of each word uppercase while leaving the rest lowercase. This style is commonly used for titles, headlines, and proper names. It gives text a neat and formal appearance, useful for labels and headings.
Alternating Case
Alternating case switches between lowercase and uppercase letters for each character in the text. For example, "tHiS Is aLtErNaTiNg cAsE". This playful and creative style is often used for memes or to convey sarcasm or irony online. It's not for formal use but can add humor or emphasis.
Toggle Case
Toggle case flips the capitalization of each letter in the text — uppercase letters become lowercase, and lowercase letters become uppercase. It's useful for quickly reversing incorrect capitalization or adding visual variation.
Camel Case
Camel case writes phrases without spaces, capitalizing each word except the first one—like "thisIsCamelCase". Commonly used in programming for variables and functions, especially in JavaScript, Java, and C#.
COBOL Case
COBOL case converts all letters to uppercase and separates words with hyphens, like "THIS-IS-COBOL-CASE". Inspired by the COBOL programming language, it's used in legacy codebases and environments following COBOL conventions.
Dot Case
Dot case connects words using dots and converts all letters to lowercase, like "this.is.dot.case". Often used in file names, URLs, and technical documentation where spaces must be avoided.
Kebab Case
Kebab case joins words with hyphens in lowercase, like "this-is-kebab-case". Common in web development for URLs and CSS class names, it's readable and works well for SEO and consistent naming.
Snake Case
Snake case separates words with underscores and uses only lowercase letters, like "this_is_snake_case". It’s popular in Python and other languages for variable names, helping maintain consistency and clarity.
Pascal Case
Pascal case capitalizes the first letter of each word and removes spaces, like "ThisIsPascalCase". Similar to camel case, it’s used for naming classes and modules in languages like C# and .NET.
Constant Case
Constant case uses uppercase letters separated by underscores, like "THIS_IS_CONSTANT_CASE". Often used for global constants in code to indicate fixed values that should not change.
Hashtag Case
Hashtag case separates words using the "#" symbol, like "#hello #world". It's widely used on social media to tag content, increase visibility, and join trending topics or conversations.
Enjoying our Case Converter? Help others discover it:
How to Use Case Converter
Easily convert your text into various case formats, including UPPER CASE, lower case, Sentence case, and more with ConvertCase.co.
- Start typing or paste your text into the provided text area.
- Use the Open file button if you want to load text directly from a file.
- Select the desired case format (e.g., Sentence case, UPPER CASE, camelCase) from the available options.
- Your text will automatically convert to the chosen case format.
- Click the Copy button to copy the formatted text to your clipboard.
- Click Download to save your converted text as a file.
- Use the Clear button to reset the text area and start over.
Why Choose ConvertCase.co?
Whether you're writing blog posts, coding, formatting documents, or just need quick text transformations, ConvertCase.co offers a powerful, all-in-one toolkit designed to save you time and effort.
Key Features:- 15+ Case Converters – Instantly switch between Sentence Case, UPPER CASE, camelCase, snake_case, PascalCase, Hashtag Case, and more.
- Fast and Lightweight – Everything runs in your browser with no lag, loading bars, or page refreshes.
- Easy Text Input – Type directly, paste from clipboard, or
upload supported file types like
.txt,.md, or.json. - Quick Export Options – Copy to clipboard or download your edited text instantly as a file.
- User-Friendly UI – Clean, minimal interface designed for writers, developers, students, teachers, and everyday users alike.
- 100% Free to Use – No registration, subscriptions, or limits — just open and use.
- Dark Mode Friendly – Enjoy a comfortable reading experience whether you’re working day or night.
Frequently Asked Questions
Have questions about ConvertCase.co? Find answers to common queries below.
1. What is ConvertCase.co used for?
ConvertCase.co is a tool used to quickly and easily convert text into various formats such as uppercase, lowercase, camel case, sentence case, and more. It's ideal for writers, programmers, and content creators.
2. How do I convert text using ConvertCase.co?
Simply paste or type your text into the input area, select the desired case format, and your text will be instantly converted.
3. Can I upload text from a file?
Yes! Click the "Open file" button to upload and convert text directly from your file.
4. How do I copy the converted text?
Click the "Copy" button to quickly copy the converted text to your clipboard for easy pasting elsewhere.
5. Is there an option to download the converted text?
Absolutely! Just click the "Download" button to save your converted text as a file.
6. Can I clear the text to start over?
Yes, click the "Clear" button to reset the input area and start fresh.
7. Is ConvertCase.co free to use?
Yes! It is completely free, requires no registration, and you can use it as many times as you like.