Convert text to uppercase, lowercase, title case, sentence case, camelCase or snake_case in one click. Paste your text, pick a style and copy the result.
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- Type or paste your text into the input box.
- Click a case button: UPPER CASE, lower case, Title Case, Sentence case, camelCase or snake_case.
- Check the result in the output box.
- Click Copy Text to copy it.
When to Use Each Case Type
UPPER CASE
Every letter is a capital. Use it for acronyms, legal notices and short emphasis. Avoid it for full sentences, because it reads as shouting.
lower case
Every letter is small. It is useful for fixing text typed with caps lock on and for cleaning data before you process it.
Title Case
Each word starts with a capital. It is the usual style for headlines, article titles and product names.
Sentence case
Only the first word of each sentence starts with a capital. Use it for body copy, email subject lines and social posts.
camelCase
Words are joined with no spaces and each new word starts with a capital, for example myVariableName. JavaScript and Java use it for variable and function names.
snake_case
Words are lower case and joined with underscores, for example user_email_address. Python, database columns and file names often use it.
Who Uses a Text Case Converter
- Writers and editors: Standardise headings and titles without retyping.
- Content marketers: Keep blog titles and social copy in one consistent style.
- Developers: Switch names between camelCase and snake_case.
- SEO professionals: Keep title tags and headings consistent across a site.
- Data teams: Normalise text fields where casing varies between rows.
Frequently asked questions
What is a text case converter?
It changes the capitalisation of text. You can switch between uppercase, lowercase, title case, sentence case, camelCase and snake_case without editing each word by hand.
What is the difference between Title Case and Sentence case?
Title Case capitalises every word and suits headlines. Sentence case capitalises only the first word of each sentence and suits body text and social posts.
What is camelCase used for?
Programmers use it to name variables and functions in JavaScript, Java and TypeScript. Words are joined without spaces and each new word starts with a capital.
What is snake_case used for?
It joins lower case words with underscores. Python code, database columns and file names commonly use it.
Is there a text limit?
There is no set limit. The conversion runs in your browser, so very large documents may be slow.
Is the Text Case Converter free?
Yes. It is free to use with no account.
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