Case Converter
Convert text to uppercase, lowercase, title case, sentence case, and more.
Enter Your Text
UPPERCASE
HELLO WORLD-
lowercase
hello world-
Title Case
Hello World-
Sentence case
Hello world. How are you?-
tOGGLE cASE
hELLO wORLD-
camelCase
helloWorld-
snake_case
hello_world-
kebab-case
hello-world-
How to use this tool
- Enter your text in the input area at the top.
- View instant conversions for all case types.
- Click 'Copy' to copy any converted text to clipboard.
- Click 'Apply' to replace your input with that case format.
- Supports uppercase, lowercase, title, sentence, toggle, camelCase, snake_case, and kebab-case.
About this tool
Case Converter is an online, free tool that transforms text between different case formats instantly. No registration required! Whether you need to format code variables, fix accidental caps lock, or format titles properly, this tool handles it all. Essential for developers, writers, and anyone working with text formatting.
Frequently asked questions
How do I change text from uppercase to lowercase?
Paste the text into the input box and every case format is generated at once. Copy the lowercase result, or click Apply next to it to replace your input so you can chain another conversion on top.
What is the difference between title case and sentence case?
Title case capitalises the significant words in a heading, as in 'The Quick Brown Fox'. Sentence case capitalises only the first word, as in 'The quick brown fox'. Headings and article titles usually take title case; body text and most user interface labels take sentence case.
What are camelCase, snake_case and kebab-case for?
They are the naming conventions programmers use where spaces are not allowed. camelCase joins words and capitalises each one after the first, common in JavaScript and Java variables. snake_case joins them with underscores, standard in Python and in SQL column names. kebab-case joins them with hyphens, used for CSS classes and URL slugs.
Can I fix text I typed with caps lock on?
Yes, and that is one of the most common reasons people come here. Paste the shouting text and take the sentence case version, which restores normal capitalisation without you retyping anything.
Does converting case change my punctuation or spacing?
No. Only letter casing changes. Punctuation, line breaks, spacing and any numbers stay exactly as you pasted them, so a converted block can go straight back where it came from.
Is my text sent to a server?
No. Every conversion runs in JavaScript on your own device. Nothing is uploaded, stored or logged.