Case Converter
Transform text to UPPER, lower, Title and Sentence case.
Quickly switch text between UPPERCASE, lowercase, Title Case and Sentence case. Great for fixing headlines, cleaning up copied text or formatting titles.
Formula / method
Examples
Hello World
hello
What each case style means
UPPERCASE turns every letter into a capital, while lowercase does the opposite. Title Case capitalizes the first letter of each word, which suits headings and titles. Sentence case capitalizes only the first letter of the text (and, ideally, proper nouns) and leaves the rest lowercase, matching how normal prose is written.
One thing to watch: strict editorial style guides like AP or Chicago keep short words such as 'and', 'of', 'the' and 'to' lowercase in titles. A simple converter capitalizes every word instead, so you may still tidy a few words by hand after switching to Title Case.
Everyday uses and limits
Case conversion is handy for fixing text typed with Caps Lock on, standardizing product names, cleaning up spreadsheet columns, or preparing headlines. Because it runs entirely in your browser, nothing you paste is uploaded anywhere.
The tool changes letters only; it cannot know which words are proper nouns, so after Sentence case you may need to re-capitalize names, brands or acronyms. If you also want to count what you paste, pair it with the Word Counter.
Where it's used
- Fixing text accidentally typed with Caps Lock on
- Formatting headlines and titles into proper Title Case
- Converting names or labels to UPPERCASE for spreadsheets or forms
- Standardizing data before import, such as lowercasing all email addresses
- Preparing slugs or identifiers like camelCase or snake_case for developers
Real-world examples
- Turning 'hELLO wORLD' back into 'Hello World' after a Caps Lock slip
- Converting 'the best coffee in town' to Title Case as 'The Best Coffee in Town'
- Lowercasing a column of email addresses before importing them to a CRM
- A developer converting 'User Profile Page' to snake_case as 'user_profile_page'
FAQ
Does it keep my formatting?
It converts letter case only; spaces and punctuation stay where they are.